1. Faculty of Medicine, “Ovidius” University of Constanta, 900470 Constanta, Romania
2. College of Medicine, Mustansiriyah University, Baghdad 10052, Iraq
3. Clinical Emergency Hospital of Constanta, 900591 Constanta, Romania
4. Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania