共 30 条
[3]
BLACKWELL AL, 1983, LANCET, V2, P1379
[4]
CUNNINGHAM F, 1991, ANN M AM SOC CLIN PH
[5]
EDELMAN DA, 1989, J REPROD MED, V34, P341
[7]
ESCHENBACH DA, 1983, SCAND J INFECT DIS, P73
[10]
GRAVETT MG, 1986, JAMA-J AM MED ASSOC, V256, P1899