Kong MY, Whitley RJ, Peng N, Oster R, Schoeb TR, Sullender W, Ambalavanan N, Clancy JP, Gaggar A, Blalock JE. Matrix Metalloproteinase-9 Mediates RSV Infection in Vitro and in Vivo. Viruses. 2015 Jul 30; 7(8):4230-53.