共 9 条
[2]
DeAngelis C, 2000, PEDIATRICS, V106, P1245
[5]
Greenberg L, 1997, HEALTH SERV RES, V31, P723
[7]
Politzer RM, 1996, INQUIRY-J HEALTH CAR, V33, P181
[8]
Smith A., 1977, INQUIRY NATURE CAUSE
[9]
WEINER JP, 1994, JAMA-J AM MED ASSOC, V272, P222