共 25 条
[2]
American College of Obstetricians and Gynecologists: Dystocia, 1989, AM COLL OBST GYN TEC, V137
[3]
[Anonymous], 2014, OBSTET GYNECOL, V123, P693
[4]
Barbeiri RL, 2013, OBG MANAG, V25, P15
[10]
COHEN WR, 1977, OBSTET GYNECOL, V49, P266