共 39 条
[35]
ZABLOCKI E, 1992, HMO MAGAZINE JUL, P48
[36]
1994, FED REGISTER, V53, P4601
[37]
1994, J HLTH CARE PERFORMA, V1, P8
[38]
1993, HLTH PLAN EMPLOYER D
[39]
1996, JAMA-J AM MED ASSOC, V273, P330