共 4 条
[1]
Bolte A., 1961, ARCH GYNAKOL, V194, P594
[2]
GAUGHEY AF, 1963, AM J OBST GYNEC, V87, P525
[3]
LARKS SD, 1963, 5 P INT C M EL LIEG
[4]
LARKS SD, 1960, FETAL ELECTROCARDIOG