共 17 条
[1]
ANDERSON I, 1971, S AFRICAN MEDICAL J, V44, P1227
[4]
DEGRAAFF R, 1963, EPIDEMIOL CHRON, V1, P228
[5]
GELFAND M, 1969, Central African Journal of Medicine, V15, P131
[6]
GREENWOO.BM, 1968, LANCET, V2, P380
[8]
HALL L., 1966, East African Medical Journal, V43, P161
[9]
KELLGREN JH, 1963, EPIDEMIOL CHRON, V1, P324
[10]
KELLGREN JH, 1963, EPIDEMIOLOGY CHRONIC, V2