- NLM Classification (2)
- QT Physiology (18)
- QU Biochemistry (2)
- QZ Pathology (33)
- W Health professions (23)
- WA Public health (2)
- WG Cardiovascular system (121)
- WI Digestive system (10)
- WJ Urogenital system (16)
- WM Psychiatry (6)
- WO Surgery (20)
- WP Gynaecology (3)
- WQ Obstetrics (1)
- WR Dermatology (22)
- WS Pediatrics (14)
- WW Ophthalmology (1)
- WY Nursing (4)
- Y Other (123)
Number of items at this level: 0.
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