共 20 条
[1]
ANDREWS BE, 1981, LANCET, V1, P632
[4]
BRADSTREET C. M. PATRICIA, 1962, MONTH BULL MIN HEALTH AND PUBL HEALTH LAB SERV, V21, P96
[6]
CHRISTIE AB, 1980, INFECTIOUS DISEASES
[7]
DANE S, 1955, MED J AUSTRALIA, V42, P340
[9]
JANSSON E, 1960, THESIS HELSINKI
[10]
MCKENDRICK GD, 1973, LANCET, V2, P1255