Subjects
- Aged, 80 and over37
- Anesthesia37
- Attitude to Health37
- Automobile Driving37
- Avian Sarcoma Viruses37
- Brain -- physiology37
- Cataract Extraction37
- Chemistry, Pharmaceutical37
- Data Collection -- methods37
- Diphtheria -- therapy37
- Disease -- etiology37
- Economics, Hospital37
- Education, Medical -- standards37
- Emigration and Immigration37
- Ether37
- Healthcare Disparities -- statistics & numerical data37
- Homosexuality37
- Hospitals, State37
- Hospitals, Voluntary37
- Hysteria37