共 10 条
[1]
REPORT ON VARIATION IN RATES OF UTILIZATION OF SURGICAL SERVICES IN THE COMMONWEALTH OF MASSACHUSETTS
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1985, 254 (03)
:371-375
[8]
WENNBERG JE, 1977, PEDIATRICS, V59, P821
[9]
1985, CHFC IV859 CAL HLTH
[10]
1985, SMALL AREA VARIATION