[BLOCKING OF OVULATION AND OF NIDATION].
D003273:Contraceptive Devices; D010064:Embryo Implantation; D005193:Family Planning Services; D005260:Female; D012739:Gonadal Steroid Hormones; D006664:History; D006801:Humans; D010060:Ovulation; D012736:Sex Education
D012739:Gonadal Steroid Hormones
CONTRACEPTIVE DEVICES; FAMILY PLANNING; HISTORY; SEX HORMONES
BLOCCO DELL'OVULAZIONE E BLOCCO DELL'ANNIDAMENTO.