共 13 条
[1]
CAMPBELL RC, 1974, STATISTICS BIOL, V64, P144
[2]
FOX H, 1978, MAJOR PROBLEMS PATHO, P139
[6]
HANEY AF, 1980, OBSTET GYNECOL, V55, P38
[9]
PAUPE PJ, 1961, BIOL NEONAT BASEL, V3, P357
[10]
SPIRT BA, 1980, ULTRASONOGRAPHY OBST, P239