共 10 条
[2]
DOLBOW A, 1983, MED B US ARMY, V40, P15
[4]
FEICHT CB, 1978, LANCET, V2, P1145
[9]
SHANGOLD M, 1979, FERTIL STERIL, V31, P130
[10]
WEINER BJ, 1971, STATISTICAL PRINCIPL