- NLM Classification (3)
- QT Physiology (1)
- QU Biochemistry (2)
- QZ Pathology (37)
- W Health professions (12)
- WA Public health (107)
- WG Cardiovascular system (121)
- WI Digestive system (29)
- WJ Urogenital system (22)
- WM Psychiatry (14)
- WO Surgery (4)
- WP Gynaecology (3)
- WQ Obstetrics (24)
- WR Dermatology (22)
- WS Pediatrics (14)
- WW Ophthalmology (10)
- WY Nursing (4)
- Y Other (125)
Number of items at this level: 0.
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