共 13 条
[11]
SOMELL C, ACTA OBSTET GYNECOL
[12]
Uldbjerg N, 1983, Clin Obstet Gynecol, V26, P14, DOI 10.1097/00003081-198303000-00006
[13]
YE BL, 1982, AM J OBSTET GYNECOL, V142, P36