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