共 10 条
[1]
COHEN E, 1974, OBSTET GYNECOL, V43, P300
[2]
HORWITZ DA, 1974, OBSTET GYNECOL, V43, P921
[3]
HUGHES EC, 1972, OBSTETRIC GYNECOLOGI
[4]
MARGULIES D, 1966, OBSTET GYNECOL, V27, P863
[6]
SCHOENECK FJ, 1963, NEW YORK STATE J MED, V63, P2681
[7]
1977, ABORTION SURVEILLANC
[8]
1974, ABORTION SURVEILLANC
[9]
1975, ABORTION SURVEILLANC
[10]
1976, ABORTION SURVEILLANC