Medical Subjects
WL - Nervous System
5
WW - Ophthalmology
5
WC - Communicable Diseases
4
WK - Endocrine System
4
WE - Musculoskeletal System
3
WI - Digestive System
3
WM - Psychiatry
3
WU - Dentistry. Oral Surgery
3
WG - Cardiovascular System
2
W - General Medicine. Health Professions
1
WF - Respiratory System
1
WJ - Urogenital System
1
WO - Surgery
1
WP - Gynecology
1
WQ - Obstetrics
1
WT - Geriatrics
1