title: Contract or lodge practice and its influence on medical attitudes to health insurance.
mesh_terms: D001291:Attitude of Health Personnel; D005251:Fees, Medical / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007348:Insurance, Health; D012657:Self-Help Groups; D012955:Societies, Medical / Q000266:history; D014481:United States