Hierarchy
- ANATOMY
- ORGANISMS
- DISEASES
- CHEMICALS AND DRUGS
- ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT
- PSYCHIATRY AND PSYCHOLOGY
- PHENOMENA AND PROCESSES
- DISCIPLINES AND OCCUPATIONS
- HOMEOPATHY
- ANTHROPOLOGY, EDUCATION, SOCIOLOGY, AND SOCIAL PHENOMENA
- ATECHNOLOGY, INDUSTRY, AND AGRICULTURE
- HUMANITIES
- INFORMATION SCIENCE
- NAMED GROUPS
- TRADITIONAL, COMPLEMENTARY AND INTEGRATIVE MEDICINE
- HEALTH CARE
- SCIENCE AND HEALTH
- PUBLIC HEALTH
- PUBLICATION CHARACTERISTICS
- SURVEILLANCE IN PUBLIC HEALTH
- GEOGRAPHICALS