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Subjects
- Agricultural Workers' Diseases1
- Air Pollution, Indoor -- adverse effects1
- Asia1
- Canada -- epidemiology1
- Child1
- Cholera2
- Cholera -- epidemiology2
- Communicable Diseases -- etiology1
- Disease Transmission, Infectious[remove]15
- Dust1
- Emigrants and Immigrants1
- Erysipelas -- etiology1
- Europe1
- Ireland -- epidemiology1
- Medicine1
- Mercury -- therapeutic use1
- Ointments -- adverse effects1
- Philosophy, Medical1
- Physiology1
- Quarantine2