共 25 条
[21]
Rodriguez M, 1969, Bol Asoc Med P R, V61, P202
[22]
ROGOT E, 1988, NIH882896 US DEP HLT
[23]
WING S, 1987, LANCET, V2, P1067
[24]
1986, VITAL HLTH STATIS 11, V236
[25]
1986, VITAL HLTH STATIS 11, V234