共 5 条
[1]
DIPPEL AL, 1939, SURG GYNEC OBST, V68, P643
[2]
EASTMAN NJ, 1950, WILLIAMS OBSTETRICS
[3]
JACOBS B, 1936, AM J OBST G, V32, P76
[4]
JACOBS B, 1934, AM J OBST G, V29, P227