共 13 条
[1]
BAINBRIDGE NM, 1958, J OBSTET GYNAECOL BR, V65, P189
[3]
FRIEDMAN EA, 1963, OBSTET GYNECOL, V22, P755
[5]
LARDS RK, 1972, OBSTET GYNECOL, V39, P702
[6]
LINDGREN L, 1959, Acta Obstet Gynecol Scand, V38, P211
[7]
MELMED H, 1976, OBSTET GYNECOL, V47, P511
[8]
MOTTER WJ, 1984, WIEN KLIN WOCHENSCHR, V96, P446
[9]
Nie N.H., 1975, SPSS STATISTICAL PAC
[10]
ODRISCOLL K, 1975, CLIN OBSTET GYNECOL, V2, P3