共 21 条
[1]
[Anonymous], 1975, WHO TECH REP SER, P1
[3]
CATES W, 1985, LANCET, V2, P596
[4]
CATES W, 1984, SEX TRANSM DIS, V11, P113
[5]
ESCHENBACH D A, 1975, Clinical Obstetrics and Gynecology, V18, P35, DOI 10.1097/00003081-197503000-00006