- NLM Classification (4)
- QT Physiology (1)
- QU Biochemistry (2)
- QZ Pathology (33)
- W Health professions (119)
- WA Public health (82)
- WG Cardiovascular system (118)
- WI Digestive system (27)
- WJ Urogenital system (16)
- WL Nervous system (10)
- WM Psychiatry (13)
- WO Surgery (4)
- WP Gynaecology (4)
- WQ Obstetrics (24)
- WR Dermatology (22)
- WS Pediatrics (18)
- WW Ophthalmology (2)
- WY Nursing (4)
- Y Other (123)
Number of items at this level: 0.