• 146 Diseases
• 76 Mental health
• 52 Medical microbiology
• 50 Medicine, Preventive
• 48 Personality
• 47 Epidemiology
• 44 Diagnosis
• 40 Human body
• 39 Communicable diseases
• 39 Study and teaching
• 35 Infection
• 35 Preventive health services
• 32 Physical fitness
• 29 Nutrition
• 29 Treatment
• 27 Lifestyles
• 22 Diet
• 20 Stress (Psychology)
• 19 Health aspects
• 19 Suicide
• 18 Cancer
• 18 Food habits
• 17 Heart
• 17 Psychology

• 42 Information Television Network
• 31 Infobase
• 29 ABC International
• 24 Video Education Australasia
• 15 BBC Worldwide Ltd
• 14 Hazelden Publishing and Educational Services
• 10 Goldcrest Films International
• 9 A.D.A.M., Inc
• 8 Cambridge Educational (Firm)
• 7 ABC News Productions
• 7 TMW Media Group
• 6 Benjamin/Cummings Publishing Company
• 6 Firefly Films
• 6 New Zealand. Learning Media
• 5 4 Learning (Firm)
• 5 Dartmouth/Hitchcock Medical Center
• 5 Learning Zone Express (Firm)
• 5 Meridian Education Corporation
• 5 National Geographic Television & Film
• 4 Astral Studios
• 4 Canadian Broadcasting Corporation
• 4 Electric Sky (Firm)
• 4 Filmoption International (Firm)

• 3 United States
• 2 Africa, Sub-Saharan
• 1 Europe
• 1 India
• 1 Middle East

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