共 10 条
[1]
BENSON WL, 1972, OBSTET GYNECOL, V40, P417
[5]
Kauppila O, 1975, Acta Obstet Gynecol Scand Suppl, V39, P1
[8]
SMALE L E, 1976, Clinical Obstetrics and Gynecology, V19, P587, DOI 10.1097/00003081-197609000-00008
[9]
SMITH RS, 1970, OBSTET GYNECOL, V36, P151
[10]
WRIGHT RC, 1959, OBSTET GYNECOL, V14, P758