共 12 条
[1]
BALTIMORE C, 1969, PEDIATRICS, V44, P816
[2]
LILIENFIELD AM, 1976, F EPIDEMIOLOGY, P180
[3]
MCLEAN W, 1980, HLTH TRENDS, V12, P9
[7]
SOBEL R, 1969, PEDIATRICS, V44, P811
[8]
*UK DEP HLTH SOC S, 1981, HNFP817 HLTH NOT
[9]
*UK DEP HLTH SOC S, 1972, 1968 1976 HOSP IN PA
[10]
*UK OFF POP CENS S, 1979, 1977 MORT STAT A D4H