QS - HUMAN ANATOMY
QT - PHYSIOLOGY
QU - Biochemistry
QV - PHARMACOLOGY
QW - MICROBIOLOGY
QY - CLINICAL PATHOLOGY
QZ - PATHOLOGY
W - MEDICINE (GENERAL)
WA - PUBLIC HEALTH
WB - PRACTICE OF MEDICINE
WC - COMMUNICABLE DISEASES (GENERAL)
WD - DISORDERS OF SYSTEMIC, METABOLIC OR
WE - MUSCULOSKELETAL SYSTEM
WF - RESPIRATORY SYSTEM
WG - CARDIOVASCULAR SYSTEM
WH - Hemic and Lymphatic Systems
WI - DIGESTIVE SYSTEM
WJ - UROGENITAL SYSTEM
WK - ENDOCRINE SYSTEM
WL - NERVOUS SYSTEM
WM - PSYCHIATRY
WN - RADIOLOGY
WO - SURGERY
WP - GYNECOLOGY
WQ - OBSTETRICS
WR - DERMATOLOGY
WS - PEDIATRICS
WT - GERIATRICS. CHRONIC DISEASE
WU - DENTISTRY. ORAL SURGERY
WV - OTOLARYNGOLOGY
WW - OPHTHALMOLOGY
WX - HOSPITALS AND OTHER HEALTH FACILITIES
WY - NURSING