1. Annals of Internal Medicine, American College of Physicians, 190 N. Independence Mall West, Philadelphia, PA 19106, United States of America (USA).
2. World Association of Medical Editors, All India Institute of Medical Sciences, New Delhi, India.
3. Ugeskrift for Laeger (Danish Medical Journal), Hvidovre, Denmark.
4. PLOS Medicine, San Francisco, USA.
5. The Lancet, London, England.
6. Journal of Korean Medical Science, Seoul, Republic of Korea.
7. Ethiopian Journal of Health Sciences, Jimma, Ethiopia.
8. Bulletin of the World Health Organization, Geneva, Switzerland.
9. The British Medical Journal, London, England.
10. New Zealand Medical Journal, Wellington, New Zealand.
11. Revista Médica de Chile (Medical Journal of Chile), Santiago, Chile.
12. New England Journal of Medicine, Boston, USA.
13. Journal of the American Medical Association, Chicago, USA.
14. Deutsches Ärzteblatt (German Medical Journal), Cologne, Germany.
15. Library Operations, National Library of Medicine, Bethesda, USA.