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Connection

Rex Haydon to Humans

This is a "connection" page, showing publications Rex Haydon has written about Humans.
Connection Strength

0.415
  1. Thromboembolic Disease in Patients with Metastatic Femoral Lesions: A Comparison Between Prophylactic Fixation and Fracture Fixation. J Bone Joint Surg Am. 2017 Feb 15; 99(4):315-323.
    View in: PubMed
    Score: 0.017
  2. Ewing's sarcoma of bone. Cancer Treat Res. 2014; 162:93-115.
    View in: PubMed
    Score: 0.014
  3. The clinical evaluation of soft tissue tumors. Radiol Clin North Am. 2011 Nov; 49(6):1185-96, vi.
    View in: PubMed
    Score: 0.012
  4. Synergistic antitumor effect of the activated PPARgamma and retinoid receptors on human osteosarcoma. Clin Cancer Res. 2010 Apr 15; 16(8):2235-45.
    View in: PubMed
    Score: 0.010
  5. Osteosarcoma and osteoblastic differentiation: a new perspective on oncogenesis. Clin Orthop Relat Res. 2007 Jan; 454:237-46.
    View in: PubMed
    Score: 0.008
  6. Gene therapy for spinal fusion. Spine J. 2005 Nov-Dec; 5(6 Suppl):250S-258S.
    View in: PubMed
    Score: 0.008
  7. Comparative Analysis of Knee Osteoarthritis Treatment Information on Popular Social Media Platforms. J Am Acad Orthop Surg Glob Res Rev. 2025 Jun 01; 9(6).
    View in: PubMed
    Score: 0.007
  8. Diagnostic accuracy of ChatGPT-4 in orthopedic oncology: a comparative study with residents. Knee. 2025 Aug; 55:153-160.
    View in: PubMed
    Score: 0.007
  9. Identifying consensus and areas for future research in chondrosarcoma : a report from the Birmingham Orthopaedic Oncology Meeting. Bone Joint J. 2025 Feb 01; 107-B(2):246-252.
    View in: PubMed
    Score: 0.007
  10. Effective Bone Tissue Fabrication Using 3D-Printed Citrate-Based Nanocomposite Scaffolds Laden with BMP9-Stimulated Human Urine Stem Cells. ACS Appl Mater Interfaces. 2025 Jan 08; 17(1):197-210.
    View in: PubMed
    Score: 0.007
  11. Tyrosine kinase inhibitor STI-571: the new wonder drug of cancer therapy. Cancer Biol Ther. 2004 Apr; 3(4):393-4.
    View in: PubMed
    Score: 0.007
  12. Cytoplasmic and/or nuclear accumulation of the beta-catenin protein is a frequent event in human osteosarcoma. Int J Cancer. 2002 Dec 01; 102(4):338-42.
    View in: PubMed
    Score: 0.006
  13. Nuclear receptor agonists as potential differentiation therapy agents for human osteosarcoma. Clin Cancer Res. 2002 May; 8(5):1288-94.
    View in: PubMed
    Score: 0.006
  14. Integrative analysis of immune-related multi-omics profiles identifies distinct prognosis and tumor microenvironment patterns in osteosarcoma. Mol Oncol. 2022 06; 16(11):2174-2194.
    View in: PubMed
    Score: 0.006
  15. Are second-generation antihistamines appropriate for most children and adults? Arch Otolaryngol Head Neck Surg. 2001 Dec; 127(12):1510-3.
    View in: PubMed
    Score: 0.006
  16. Primary Desmoplastic Small Round Cell Tumor of the Femur: Case Report and Review of a Rare Intraosseous Malignancy. Int J Surg Pathol. 2022 May; 30(3):317-325.
    View in: PubMed
    Score: 0.006
  17. Antiparasitic mebendazole (MBZ) effectively overcomes cisplatin resistance in human ovarian cancer cells by inhibiting multiple cancer-associated signaling pathways. Aging (Albany NY). 2021 07 07; 13(13):17407-17427.
    View in: PubMed
    Score: 0.006
  18. BMP9-initiated osteogenic/odontogenic differentiation of mouse tooth germ mesenchymal cells (TGMCS) requires Wnt/ß-catenin signalling activity. J Cell Mol Med. 2021 03; 25(5):2666-2678.
    View in: PubMed
    Score: 0.006
  19. lncRNA Rmst acts as an important mediator of BMP9-induced osteogenic differentiation of mesenchymal stem cells (MSCs) by antagonizing Notch-targeting microRNAs. Aging (Albany NY). 2019 12 11; 11(24):12476-12496.
    View in: PubMed
    Score: 0.005
  20. A simplified system for the effective expression and delivery of functional mature microRNAs in mammalian cells. Cancer Gene Ther. 2020 06; 27(6):424-437.
    View in: PubMed
    Score: 0.005
  21. Auricular endochondral pseudocysts: diagnosis and management. Plast Reconstr Surg. 1999 Apr; 103(5):1451-7.
    View in: PubMed
    Score: 0.005
  22. Monensin inhibits cell proliferation and tumor growth of chemo-resistant pancreatic cancer cells by targeting the EGFR signaling pathway. Sci Rep. 2018 12 17; 8(1):17914.
    View in: PubMed
    Score: 0.005
  23. Reversibly immortalized human umbilical cord-derived mesenchymal stem cells (UC-MSCs) are responsive to BMP9-induced osteogenic and adipogenic differentiation. J Cell Biochem. 2018 11; 119(11):8872-8886.
    View in: PubMed
    Score: 0.005
  24. Niclosamide Exhibits Potent Anticancer Activity and Synergizes with Sorafenib in Human Renal Cell Cancer Cells. Cell Physiol Biochem. 2018; 47(3):957-971.
    View in: PubMed
    Score: 0.005
  25. The reliability of six faculty members in identifying important OSCE items. Acad Med. 1998 Feb; 73(2):204-5.
    View in: PubMed
    Score: 0.004
  26. Noncanonical Wnt signaling plays an important role in modulating canonical Wnt-regulated stemness, proliferation and terminal differentiation of hepatic progenitors. Oncotarget. 2017 Apr 18; 8(16):27105-27119.
    View in: PubMed
    Score: 0.004
  27. Anthelmintic mebendazole enhances cisplatin's effect on suppressing cell proliferation and promotes differentiation of head and neck squamous cell carcinoma (HNSCC). Oncotarget. 2017 Feb 21; 8(8):12968-12982.
    View in: PubMed
    Score: 0.004
  28. High prevalence of MiTF staining in undifferentiated pleomorphic sarcoma: caution in the use of melanocytic markers in sarcoma. Histopathology. 2017 Apr; 70(5):734-745.
    View in: PubMed
    Score: 0.004
  29. A Blockade of IGF Signaling Sensitizes Human Ovarian Cancer Cells to the Anthelmintic Niclosamide-Induced Anti-Proliferative and Anticancer Activities. Cell Physiol Biochem. 2016; 39(3):871-88.
    View in: PubMed
    Score: 0.004
  30. A thermoresponsive polydiolcitrate-gelatin scaffold and delivery system mediates effective bone formation from BMP9-transduced mesenchymal stem cells. Biomed Mater. 2016 Apr 21; 11(2):025021.
    View in: PubMed
    Score: 0.004
  31. Immortalized Mouse Achilles Tenocytes Demonstrate Long-Term Proliferative Capacity While Retaining Tenogenic Properties. Tissue Eng Part C Methods. 2016 Mar; 22(3):280-9.
    View in: PubMed
    Score: 0.004
  32. The Calcium-Binding Protein S100A6 Accelerates Human Osteosarcoma Growth by Promoting Cell Proliferation and Inhibiting Osteogenic Differentiation. Cell Physiol Biochem. 2015; 37(6):2375-92.
    View in: PubMed
    Score: 0.004
  33. Antibiotic monensin synergizes with EGFR inhibitors and oxaliplatin to suppress the proliferation of human ovarian cancer cells. Sci Rep. 2015 Dec 07; 5:17523.
    View in: PubMed
    Score: 0.004
  34. The evolving roles of canonical WNT signaling in stem cells and tumorigenesis: implications in targeted cancer therapies. Lab Invest. 2016 Feb; 96(2):116-36.
    View in: PubMed
    Score: 0.004
  35. TqPCR: A Touchdown qPCR Assay with Significantly Improved Detection Sensitivity and Amplification Efficiency of SYBR Green qPCR. PLoS One. 2015; 10(7):e0132666.
    View in: PubMed
    Score: 0.004
  36. The Anthelmintic Drug Niclosamide Inhibits the Proliferative Activity of Human Osteosarcoma Cells by Targeting Multiple Signal Pathways. Curr Cancer Drug Targets. 2015; 15(8):726-38.
    View in: PubMed
    Score: 0.004
  37. Canonical Wnt signaling acts synergistically on BMP9-induced osteo/odontoblastic differentiation of stem cells of dental apical papilla (SCAPs). Biomaterials. 2015 Jan; 39:145-54.
    View in: PubMed
    Score: 0.004
  38. A simplified and versatile system for the simultaneous expression of multiple siRNAs in mammalian cells using Gibson DNA Assembly. PLoS One. 2014; 9(11):e113064.
    View in: PubMed
    Score: 0.004
  39. Functional characteristics of reversibly immortalized hepatic progenitor cells derived from mouse embryonic liver. Cell Physiol Biochem. 2014; 34(4):1318-38.
    View in: PubMed
    Score: 0.004
  40. Bone morphogenetic protein 2 inhibits the proliferation and growth of human colorectal cancer cells. Oncol Rep. 2014 Sep; 32(3):1013-20.
    View in: PubMed
    Score: 0.004
  41. Use of standardized patients to identify deficits in student performance and curriculum effectiveness. Am J Surg. 1994 Jul; 168(1):57-64; discussion 64-5.
    View in: PubMed
    Score: 0.004
  42. The piggyBac transposon-mediated expression of SV40 T antigen efficiently immortalizes mouse embryonic fibroblasts (MEFs). PLoS One. 2014; 9(5):e97316.
    View in: PubMed
    Score: 0.003
  43. Reversibly Immortalized Mouse Articular Chondrocytes Acquire Long-Term Proliferative Capability While Retaining Chondrogenic Phenotype. Cell Transplant. 2015; 24(6):1053-66.
    View in: PubMed
    Score: 0.003
  44. Overexpression of Ad5 precursor terminal protein accelerates recombinant adenovirus packaging and amplification in HEK-293 packaging cells. Gene Ther. 2014 Jul; 21(7):629-37.
    View in: PubMed
    Score: 0.003
  45. Characterization of constitutive promoters for piggyBac transposon-mediated stable transgene expression in mesenchymal stem cells (MSCs). PLoS One. 2014; 9(4):e94397.
    View in: PubMed
    Score: 0.003
  46. Adenovirus-mediated efficient gene transfer into cultured three-dimensional organoids. PLoS One. 2014; 9(4):e93608.
    View in: PubMed
    Score: 0.003
  47. Adenovirus-mediated gene transfer in mesenchymal stem cells can be significantly enhanced by the cationic polymer polybrene. PLoS One. 2014; 9(3):e92908.
    View in: PubMed
    Score: 0.003
  48. Targeting BMP9-promoted human osteosarcoma growth by inactivation of notch signaling. Curr Cancer Drug Targets. 2014; 14(3):274-85.
    View in: PubMed
    Score: 0.003
  49. Crosstalk between Wnt/ß-catenin and estrogen receptor signaling synergistically promotes osteogenic differentiation of mesenchymal progenitor cells. PLoS One. 2013; 8(12):e82436.
    View in: PubMed
    Score: 0.003
  50. Modulation of ß-catenin signaling by the inhibitors of MAP kinase, tyrosine kinase, and PI3-kinase pathways. Int J Med Sci. 2013; 10(13):1888-98.
    View in: PubMed
    Score: 0.003
  51. Destabilization of heterologous proteins mediated by the GSK3ß phosphorylation domain of the ß-catenin protein. Cell Physiol Biochem. 2013; 32(5):1187-99.
    View in: PubMed
    Score: 0.003
  52. The E-F hand calcium-binding protein S100A4 regulates the proliferation, survival and differentiation potential of human osteosarcoma cells. Cell Physiol Biochem. 2013; 32(4):1083-96.
    View in: PubMed
    Score: 0.003
  53. Characterization of scaffold carriers for BMP9-transduced osteoblastic progenitor cells in bone regeneration. J Biomed Mater Res A. 2014 Oct; 102(10):3429-38.
    View in: PubMed
    Score: 0.003
  54. Endoplasmic reticulum (ER) stress inducible factor cysteine-rich with EGF-like domains 2 (Creld2) is an important mediator of BMP9-regulated osteogenic differentiation of mesenchymal stem cells. PLoS One. 2013; 8(9):e73086.
    View in: PubMed
    Score: 0.003
  55. Inhibition of histone deacetylases potentiates BMP9-induced osteogenic signaling in mouse mesenchymal stem cells. Cell Physiol Biochem. 2013; 32(2):486-98.
    View in: PubMed
    Score: 0.003
  56. Noggin resistance contributes to the potent osteogenic capability of BMP9 in mesenchymal stem cells. J Orthop Res. 2013 Nov; 31(11):1796-803.
    View in: PubMed
    Score: 0.003
  57. Cross-talk between EGF and BMP9 signalling pathways regulates the osteogenic differentiation of mesenchymal stem cells. J Cell Mol Med. 2013 Sep; 17(9):1160-72.
    View in: PubMed
    Score: 0.003
  58. Establishment and characterization of the reversibly immortalized mouse fetal heart progenitors. Int J Med Sci. 2013; 10(8):1035-46.
    View in: PubMed
    Score: 0.003
  59. Decellularized liver scaffolds effectively support the proliferation and differentiation of mouse fetal hepatic progenitors. J Biomed Mater Res A. 2014 Apr; 102(4):1017-25.
    View in: PubMed
    Score: 0.003
  60. IGFBP5 domains exert distinct inhibitory effects on the tumorigenicity and metastasis of human osteosarcoma. Cancer Lett. 2013 Aug 09; 336(1):222-30.
    View in: PubMed
    Score: 0.003
  61. Characterization of chondrocyte scaffold carriers for cell-based gene therapy in articular cartilage repair. J Biomed Mater Res A. 2013 Dec; 101(12):3542-50.
    View in: PubMed
    Score: 0.003
  62. Cutaneous squamous carcinoma and related lesions. Otolaryngol Clin North Am. 1993 Feb; 26(1):57-71.
    View in: PubMed
    Score: 0.003
  63. BMP9-regulated angiogenic signaling plays an important role in the osteogenic differentiation of mesenchymal progenitor cells. J Cell Sci. 2013 Jan 15; 126(Pt 2):532-41.
    View in: PubMed
    Score: 0.003
  64. Growth hormone synergizes with BMP9 in osteogenic differentiation by activating the JAK/STAT/IGF1 pathway in murine multilineage cells. J Bone Miner Res. 2012 Jul; 27(7):1566-75.
    View in: PubMed
    Score: 0.003
  65. All-trans retinoic acid inhibits tumor growth of human osteosarcoma by activating Smad signaling-induced osteogenic differentiation. Int J Oncol. 2012 Jul; 41(1):153-60.
    View in: PubMed
    Score: 0.003
  66. Conditionally immortalized mouse embryonic fibroblasts retain proliferative activity without compromising multipotent differentiation potential. PLoS One. 2012; 7(2):e32428.
    View in: PubMed
    Score: 0.003
  67. BMP-9 induced osteogenic differentiation of mesenchymal stem cells: molecular mechanism and therapeutic potential. Curr Gene Ther. 2011 Jun; 11(3):229-40.
    View in: PubMed
    Score: 0.003
  68. The therapeutic potential of the Wnt signaling pathway in bone disorders. Curr Mol Pharmacol. 2011 Jan; 4(1):14-25.
    View in: PubMed
    Score: 0.003
  69. Ginsenoside Rg3 inhibits colorectal tumor growth through the down-regulation of Wnt/ß-catenin signaling. Int J Oncol. 2011 Feb; 38(2):437-45.
    View in: PubMed
    Score: 0.003
  70. Lysophosphatidic acid acyltransferase ß (LPAATß) promotes the tumor growth of human osteosarcoma. PLoS One. 2010 Dec 01; 5(12):e14182.
    View in: PubMed
    Score: 0.003
  71. Insulin-like growth factor 2 (IGF-2) potentiates BMP-9-induced osteogenic differentiation and bone formation. J Bone Miner Res. 2010 Nov; 25(11):2447-59.
    View in: PubMed
    Score: 0.003
  72. Tetrandrine inhibits Wnt/ß-catenin signaling and suppresses tumor growth of human colorectal cancer. Mol Pharmacol. 2011 Feb; 79(2):211-9.
    View in: PubMed
    Score: 0.003
  73. Retinoic acids potentiate BMP9-induced osteogenic differentiation of mesenchymal progenitor cells. PLoS One. 2010 Jul 30; 5(7):e11917.
    View in: PubMed
    Score: 0.003
  74. TGFbeta/BMP type I receptors ALK1 and ALK2 are essential for BMP9-induced osteogenic signaling in mesenchymal stem cells. J Biol Chem. 2010 Sep 17; 285(38):29588-98.
    View in: PubMed
    Score: 0.003
  75. The CCN proteins: important signaling mediators in stem cell differentiation and tumorigenesis. Histol Histopathol. 2010 06; 25(6):795-806.
    View in: PubMed
    Score: 0.003
  76. Multiplanar osteotomy with limited wide margins: a tissue preserving surgical technique for high-grade bone sarcomas. Clin Orthop Relat Res. 2010 Oct; 468(10):2754-64.
    View in: PubMed
    Score: 0.003
  77. Wnt antagonist SFRP3 inhibits the differentiation of mouse hepatic progenitor cells. J Cell Biochem. 2009 Sep 01; 108(1):295-303.
    View in: PubMed
    Score: 0.003
  78. Primary tumor necrosis predicts distant control in locally advanced soft-tissue sarcomas after preoperative concurrent chemoradiotherapy. Int J Radiat Oncol Biol Phys. 2010 Mar 15; 76(4):1147-53.
    View in: PubMed
    Score: 0.002
  79. A comprehensive analysis of the dual roles of BMPs in regulating adipogenic and osteogenic differentiation of mesenchymal progenitor cells. Stem Cells Dev. 2009 May; 18(4):545-59.
    View in: PubMed
    Score: 0.002
  80. Establishment and characterization of a new highly metastatic human osteosarcoma cell line. Clin Exp Metastasis. 2009; 26(7):599-610.
    View in: PubMed
    Score: 0.002
  81. Hey1 basic helix-loop-helix protein plays an important role in mediating BMP9-induced osteogenic differentiation of mesenchymal progenitor cells. J Biol Chem. 2009 Jan 02; 284(1):649-659.
    View in: PubMed
    Score: 0.002
  82. BMP-9-induced osteogenic differentiation of mesenchymal progenitors requires functional canonical Wnt/beta-catenin signalling. J Cell Mol Med. 2009 Aug; 13(8B):2448-2464.
    View in: PubMed
    Score: 0.002
  83. Osteogenic BMPs promote tumor growth of human osteosarcomas that harbor differentiation defects. Lab Invest. 2008 Dec; 88(12):1264-77.
    View in: PubMed
    Score: 0.002
  84. Osteosarcoma development and stem cell differentiation. Clin Orthop Relat Res. 2008 Sep; 466(9):2114-30.
    View in: PubMed
    Score: 0.002
  85. Comparison of complications following frontal sinus fractures managed with exploration with or without obliteration over 10 years. Laryngoscope. 1988 May; 98(5):516-20.
    View in: PubMed
    Score: 0.002
  86. Regulation of osteogenic differentiation during skeletal development. Front Biosci. 2008 Jan 01; 13:2001-21.
    View in: PubMed
    Score: 0.002
  87. AOA 2005 John J. Fahey, MD, Memorial North American Traveling Fellowship: Fellows' Travel Diary. J Bone Joint Surg Am. 2008 Jan; 90(1):205-7.
    View in: PubMed
    Score: 0.002
  88. Nontraumatic subluxation of the atlantoaxial joint: Grisel's syndrome. Ann Otol Rhinol Laryngol. 1987 Nov-Dec; 96(6):705-8.
    View in: PubMed
    Score: 0.002
  89. Distinct roles of bone morphogenetic proteins in osteogenic differentiation of mesenchymal stem cells. J Orthop Res. 2007 May; 25(5):665-77.
    View in: PubMed
    Score: 0.002
  90. Selection and validation of optimal siRNA target sites for RNAi-mediated gene silencing. Gene. 2007 Jun 15; 395(1-2):160-9.
    View in: PubMed
    Score: 0.002
  91. Wnt signaling and human diseases: what are the therapeutic implications? Lab Invest. 2007 Feb; 87(2):97-103.
    View in: PubMed
    Score: 0.002
  92. A protocol for rapid generation of recombinant adenoviruses using the AdEasy system. Nat Protoc. 2007; 2(5):1236-47.
    View in: PubMed
    Score: 0.002
  93. CCN1/Cyr61 is regulated by the canonical Wnt signal and plays an important role in Wnt3A-induced osteoblast differentiation of mesenchymal stem cells. Mol Cell Biol. 2006 Apr; 26(8):2955-64.
    View in: PubMed
    Score: 0.002
  94. Increased expression of S100A6 is associated with decreased metastasis and inhibition of cell migration and anchorage independent growth in human osteosarcoma. Cancer Lett. 2005 Nov 08; 229(1):135-48.
    View in: PubMed
    Score: 0.002
  95. Gene therapy for bone regeneration. Curr Gene Ther. 2005 Apr; 5(2):167-79.
    View in: PubMed
    Score: 0.002
  96. An orthotopic model of human osteosarcoma growth and spontaneous pulmonary metastasis. Clin Exp Metastasis. 2005; 22(4):319-29.
    View in: PubMed
    Score: 0.002
  97. Wnt/beta-catenin signaling pathway as a novel cancer drug target. Curr Cancer Drug Targets. 2004 Dec; 4(8):653-71.
    View in: PubMed
    Score: 0.002
  98. Connective tissue growth factor (CTGF) is regulated by Wnt and bone morphogenetic proteins signaling in osteoblast differentiation of mesenchymal stem cells. J Biol Chem. 2004 Dec 31; 279(53):55958-68.
    View in: PubMed
    Score: 0.002
  99. Dual regulation of gene expression mediated by tetracycline and Cre recombinase. Biotechniques. 2004 Mar; 36(3):390-2, 394, 396.
    View in: PubMed
    Score: 0.002
  100. Transcriptional characterization of bone morphogenetic proteins (BMPs)-mediated osteogenic signaling. J Cell Biochem. 2003 Dec 15; 90(6):1149-65.
    View in: PubMed
    Score: 0.002
  101. Myoid differentiation and prognosis in adult pleomorphic sarcomas of the extremity: an analysis of 92 cases. Cancer. 2003 Aug 15; 98(4):805-13.
    View in: PubMed
    Score: 0.002
  102. Osteogenic activity of the fourteen types of human bone morphogenetic proteins (BMPs). J Bone Joint Surg Am. 2003 Aug; 85(8):1544-52.
    View in: PubMed
    Score: 0.002
  103. Tyrosine kinase inhibitor STI-571/Gleevec down-regulates the beta-catenin signaling activity. Cancer Lett. 2003 Apr 25; 193(2):161-70.
    View in: PubMed
    Score: 0.002
  104. Potential use of Sox9 gene therapy for intervertebral degenerative disc disease. Spine (Phila Pa 1976). 2003 Apr 15; 28(8):755-63.
    View in: PubMed
    Score: 0.002
  105. Fluorescence-based functional assay for Wnt/beta-catenin signaling activity. Biotechniques. 2002 Nov; 33(5):1126-8, 1130, 1132 passim.
    View in: PubMed
    Score: 0.002
  106. Elevated protein expression of cyclin D1 and Fra-1 but decreased expression of c-Myc in human colorectal adenocarcinomas overexpressing beta-catenin. Int J Cancer. 2002 Oct 01; 101(4):301-10.
    View in: PubMed
    Score: 0.002
  107. Increased efficiency of cloning large DNA fragments using a lower copy number plasmid. Biotechniques. 2002 May; 32(5):992, 994, 996 passim.
    View in: PubMed
    Score: 0.002
  108. Tetracycline-regulated gene expression mediated by a novel chimeric repressor that recruits histone deacetylases in mammalian cells. J Biol Chem. 2001 Nov 30; 276(48):45168-74.
    View in: PubMed
    Score: 0.001
  109. Intracranial pressure changes during bilateral radical neck dissections. Head Neck. 1993 Nov-Dec; 15(6):546-52.
    View in: PubMed
    Score: 0.001
  110. Snoring and related problems: surgical correction. W V Med J. 1986 May; 82(5):127-30.
    View in: PubMed
    Score: 0.000
Connection Strength

The connection strength for concepts is the sum of the scores for each matching publication.

Publication scores are based on many factors, including how long ago they were written and whether the person is a first or senior author.