1. UNIVERSITY OF CRETE, FACULTY OF MEDICINE, HERACLION, GREECE
2. IVANO-FRANKIVSK NATIONAL MEDICAL UNIVERSITY, IVANO-FRANKIVSK, UKRAINE
3. HIGH INSTITUTE OF PUBLIC HEALTH, ALEXANDRIA, EGYPT
4. UNIVERSITY WITTEN-HERDECKE, WUPPERTAL, GERMANY
5. DEPARTMENT OF HISTORY OF MEDICINE, UNIVERSITY OF IOANNINA, IOANNINA, GREECE