共 5 条
[1]
BREEN JL, 1977, OBSTET GYNECOL, V49, P43
[2]
KALTREIDER DF, 1945, B SCH MED U MARYLAND, V30, P1
[3]
MOIR JC, 1971, MUNRO KERRS OPERATIV
[4]
PRITCHARD JA, 1985, WILLIAMS OBSTETRICS
[5]
TAEFI P, 1970, OBSTET GYNECOL, V36, P686