共 7 条
[1]
AUBRY R H, 1973, Clinical Obstetrics and Gynecology, V16, P3, DOI 10.1097/00003081-197303000-00002
[2]
COOPLAND AT, 1977, CAN MED ASSOC J, V116, P999
[3]
GOODWIN JW, 1969, CAN MED ASSOC J, V101, P57
[4]
HOBEL CJ, 1973, AM J OBSTET GYNECOL, V117, P1
[5]
MORRISON I, 1979, OBSTET GYNECOL, V53, P362
[7]
USHER R, 1977, SEMIN PERINATOL, V1, P309