共 25 条
[1]
ARMITAGE P, 1971, STATISTICAL METHODS
[4]
BEHRSON I, 1974, S AFR MED J, V48, P941
[6]
BOTHA JF, 1984, LANCET, V1, P1210
[7]
BRINK BA, 1987, 3 INT C AIDS WASH
[8]
BROTMAN B, 1973, LANCET, V1, P1305
[10]
CRONBERG S, 1984, LIVER, V4, P275