共 30 条
[2]
BERTOLASI CA, 1976, CHEST, V70, P596, DOI 10.1378/chest.70.5.596
[6]
COX DR, 1972, J R STAT SOC B, V34, P187
[7]
CUTLER S J, 1958, J Chronic Dis, V8, P699, DOI 10.1016/0021-9681(58)90126-7
[10]
FULTON M, 1972, LANCET, V1, P860