1. Service of the blood and blood components supply , University Clinical Center Kragujevac , Kragujevac , Serbia
2. Medical Center in Uzice, Organizational Unit - Health Center in Pozega , Pozega , Serbia
3. Clinic for Orthopaedic Surgery and Traumatology, Clinical Center of Serbia , Belgrade , Serbia
4. University of Kragujevac , Faculty of Medical Sciences, Department of Pharmacy , Kragujevac , Serbia