Research topics below this in the hierarchy
- Immunologic diseases. Allergy
- Nutritional diseases. Deficiency diseases
- Metabolic diseases
- Diseases of the blood and blood-forming organs
- Diseases of the endocrine glands. Clinical endocrinology
- Diseases of the circulatory (Cardiovascular) system
- Diseases of the respiratory system
- Diseases of the digestive system. Gastroenterology
- Diseases of the genitourinary system. Urology
- Diseases of the connective tissues
- Diseases of the musculoskeletal system