共 12 条
[2]
CARTWRIGHT KAV, 1986, LANCET, V2, P558
[3]
GEDDE-DAHL T W, 1990, NIPH (National Institute of Public Health) Annals (Oslo), V13, P45
[5]
HOPKIN D A B, 1978, Lancet, V2, P1193
[6]
Jones D M, 1991, CDR (Lond Engl Rev), V1, pR76
[9]
1980, INFECTIONS DISEASES
[10]
1989, COMMUNICABLE DISEASE, V8, P3