COLLABORATIVE RESEARCH INSTITUTES clinical trials conducted in collaboration with the below institutes FACULTY OF MEDICINE, UNIVERSITY OF THESSALYLARISSA, GREECE ESKIŞEHIR OSMANGAZI UNIVERSITY, ESKIŞEHIR, TURKEY COLLEGE OF MEDICINE, MUSTANSIRIYAH UNIVERSITYBAGHDAD, IRAQ ATHENS GENERAL CHILDREN’S HOSPITAL UNIVERSITY OF ATHENS, GREECE GUANGZHOU MEDICAL UNIVERSITY CHINA SREBRNJAK CHILDREN’S HOSPITAL ZAGREB, CROATIA MILITARY MEDICAL ACADEMY, UNIVERSITY OF DEFENSE, BELGRADE, SERBIA