共 19 条
[3]
CREASY RK, 1980, OBSTET GYNECOL, V55, P692
[4]
DOLT AB, 1976, AM J OBSTET GYNECOL, V125, P532
[5]
FELICE M E, 1981, Journal of Adolescent Health Care, V1, P193, DOI 10.1016/S0197-0070(81)80055-1
[6]
HEINS HC, 1987, OBSTET GYNECOL, V70, P263
[7]
HERRON MA, 1982, OBSTET GYNECOL, V59, P452
[8]
HOBEL CJ, 1982, CONT OB GYN, V19, P209
[10]
Kessner DM, 1973, CONTRASTS HLTH STATU, V1