- NLM Classification (83)
- QT Physiology (17)
- QU Biochemistry (13)
- QZ Pathology (384)
- W Health professions (83)
- WA Public health (81)
- WB Practice of medicine (456)
- WG Cardiovascular system (117)
- WJ Urogenital system (15)
- WL Nervous system (10)
- WM Psychiatry (12)
- WO Surgery (79)
- WP Gynaecology (16)
- WQ Obstetrics (1)
- WR Dermatology (21)
- WS Pediatrics (18)
- WW Ophthalmology (9)
- WY Nursing (4)
- Y Other (123)
Number of items at this level: 0.