Preferred provider organizations. Development and growth.
D000407:Alabama; D001291:Attitude of Health Personnel; D003256:Community Participation; D004649:Employee Incentive Plans; D006801:Humans; D007221:Industry; D007348:Insurance, Health / Q000331:legislation & jurisprudence; D007349:Insurance, Health, Reimbursement; D010820:Physicians; D011243:Preferred Provider Organizations / Q000331:legislation & jurisprudence; D014481:United States