共 9 条
[1]
CAMPBELL S, 1969, Journal of Obstetrics and Gynaecology of the British Commonwealth, V76, P603
[2]
GRENNERT L, 1978, ACTA OBSTET GYN SCAN, P5
[7]
Persson P H, 1978, Acta Obstet Gynecol Scand Suppl, V78, P15
[8]
PERSSON PH, 1984, UNPUB POST TERM PREG