Subfield
- Education221
- Infectious Diseases167
- Political Science and International Relations122
- Safety Research119
- Linguistics and Language96
- Language and Linguistics86
- Human Factors and Ergonomics82
- General Agricultural and Biological Sciences80
- General Health Professions79
- Public Health, Environmental and Occupational Health78
- Agronomy and Crop Science77
- Soil Science77
- Gender Studies76
- Parasitology70
- Developmental and Educational Psychology64
- Obstetrics and Gynecology60
- Law58
- Pediatrics, Perinatology and Child Health53
- Development52
- Demography48