1. HEALTH MAINTENANCE AND DISEASE PREVENTION
2. EYE, EAR, NOSE, AND THROAT PROBLEMS
3. RESPIRATORY DISEASES
4. CARDIOVASCULAR DISEASES
5. GASTROINTESTINAL DISEASES
6. DISEASES OF LIVER, GALLBLADDER, AND BILE DUCTS
7. REPRODUCTION AND REPRODUCTIVE DISORDERS
8. URINARY TRACT DISORDERS
9. HEMATOLOGIC DISEASE
10. METABOLIC AND ENDOCRINE DISEASES
11. NUTRITIONAL DISEASES
12. DISEASES OF BONE
13. DISEASES OF THE IMMUNE SYSTEM
14. MUSCULOSKELETAL/CONNECTIVE TISSUE DISEASES
15. INFECTIOUS DISEASES
16. PROTOZOAN/HELMINTHIC DISEASES
17. SKIN DISEASES
18. NEUROLOGY
19. PSYCHIATRIC AND BEHAVIORAL DISORDERS
20. POISONING AND ENVIRONMENTAL PROBLEMS