Subfield
- Education218
- Infectious Diseases167
- Political Science and International Relations125
- Safety Research116
- Linguistics and Language92
- Language and Linguistics84
- General Agricultural and Biological Sciences82
- Human Factors and Ergonomics80
- General Health Professions79
- Agronomy and Crop Science78
- Public Health, Environmental and Occupational Health78
- Soil Science78
- Gender Studies76
- Parasitology70
- Developmental and Educational Psychology64
- Law61
- Obstetrics and Gynecology58
- Accounting56
- Development55
- Pediatrics, Perinatology and Child Health52