共 16 条
[1]
Centers for Disease Control, 1980, MMWR-MORBID MORTAL W, V29, P229
[4]
HARVEY, 1984, AM J MED, V76, P351
[6]
JACOBS R, 1984, AM J EPIDEMIOL, V120, P474
[7]
MIDAY RK, 1985, JUN ANN M SOC EP RES