共 7 条
[1]
Macleod M D, 1886, Br Med J, V2, P239
[2]
MacMahon B, 1960, EPIDEMIOLOGIC METHOD, p[229, 260]
[3]
MCCLELLAN SG, UNPUBLISHED
[5]
PUGH TF, 1962, EPIDEMIOLOGIC FINDIN, P50
[6]
STENGEL E., 1959, BULL WORLD HEALTH ORGAN, V21, P601