Understanding geographic variations in health care delivery.
Wennberg
J E
JE
D002908:Chronic Disease / Q000628:therapy*; D006742:Hospital Bed Capacity; D006787:Hospitals, Veterans / Q000706:statistics & numerical data*; D006801:Humans; D010044:Outpatient Clinics, Hospital / Q000706:statistics & numerical data*; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data*; D014481:United States; D014600:Utilization Review