Subfield
- Infectious Diseases29
- General Agricultural and Biological Sciences17
- Education16
- Public Health, Environmental and Occupational Health13
- Safety Research13
- Gender Studies12
- General Health Professions12
- Waste Management and Disposal11
- Agronomy and Crop Science10
- Parasitology10
- Political Science and International Relations9
- Linguistics and Language8
- Obstetrics and Gynecology8
- Virology8
- General Economics, Econometrics and Finance7
- Health7
- Language and Linguistics7
- Soil Science7
- Developmental and Educational Psychology6
- Law6