S. Shirts

发表

S. Smazal, K. Hopper, L. Weisman, 1983, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

S P Cooper, P A Buffler, R. Hardy, 1988, American journal of epidemiology.

J. R. Bobitt, M. Brown, S. Shirts, 1983, Obstetrics and gynecology.