Simpson, JL, Phillips, OP. (1990). Spermicides, hormonal contraception and congenital malformations
.
6(3), 141-167. 10.1007/BF01849490
Simpson, JL, Phillips, OP. (1990). Spermicides, hormonal contraception and congenital malformations
. 6(3), 141-167. 10.1007/BF01849490