Sex differences in the genetic basis of morning serum cortisol levels: genome-wide screen identifies two novel loci specific to women.
Kurina LM, Weiss LA, Graves SW, Parry R, Williams GH, Abney M, Ober C. Sex differences in the genetic basis of morning serum cortisol levels: genome-wide screen identifies two novel loci specific to women. J Clin Endocrinol Metab. 2005 Aug; 90(8):4747-52.