共 5 条
[1]
ACHESON RM, 1961, LANCET, V1, P917
[2]
ANDREWS WC, 1961, OBST GYNEC SURV, V16, P6
[3]
GUSBERG SB, 1961, OBST GYNEC, V13, P397
[4]
OIKAWA K, 1961, NEW ENGLAND J MED, V264, P20