Search results for: Eric Vittinghoff
Contraception > 1996 > 53 > 6 > 321-327
American Journal of Obstetrics and Gynecology > 1995 > 173 > 5 > 1578-1584
Contraception > 1996 > 53 > 6 > 321-327
American Journal of Obstetrics and Gynecology > 1995 > 173 > 5 > 1578-1584