[National Health Service--the prototype of the welfare and self-governing occupational health services in Poland].
D006264:Health Benefit Plans, Employee / Q000266:history*; D049673:History, 20th Century; D007348:Insurance, Health / Q000266:history*; D009786:Occupational Health Services / Q000266:history*; D011044:Poland; D013222:State Medicine / Q000266:history*
Kasa chorych--pierwowzór spoølecznego, samorzadowego lecznictwa pracowniczego w Polsce.