Supply and demand.
Hensinger
Robert N
RN
Thompson
George H
GH
D002648:Child; D006301:Health Services Needs and Demand; D006801:Humans; D019637:Orthopedic Procedures / Q000379:methods*; D009985:Orthopedics; D010820:Physicians / Q000600:supply & distribution*; D014481:United States; D000078329:Workforce