Dr. Michael O'Shea gives his opinion of the reason why HMO's exist.
Keller
B J
BJ
D003256:Community Participation; D003729:Dental Care / Q000191:economics; D017049:Employer Health Costs; D006264:Health Benefit Plans, Employee / Q000191:economics; D006279:Health Maintenance Organizations / Q000191:economics; D006801:Humans