Group practice in occupational medicine: the union-sponsored group.
D003032:Coal Mining; D003153:Community Health Services; D006123:Group Practice; D006279:Health Maintenance Organizations; D007348:Insurance, Health; D007750:Labor Unions; D007883:Legislation, Medical; D009786:Occupational Health Services; D009787:Occupational Medicine; D014481:United States; D014942:Workers' Compensation