Topic
- Cancer—Prevention 6
- Childbirth—education 6
- Food habits 6
- Health and hygiene—China 6
- Mental illness 6
- Smoking 6
- Tobacco 6
- American Red Cross 5
- Birth control 5
- Evacuation of civilians (World War II) 5
- Gonorrhea 5
- Maternity hospitals 5
- Pedestrians—safety measures 5
- Physical examination 5
- Agriculture 4
- Cancer 4
- Childbirth-education 4
- Health and hygiene 4
- Milk 4
- Preventive medicine 4