Specialist Practice, Katowice, Poland
Private Specialist Practice, Bytom, Poland
Clinical Research Center, Poznań, Poland
Medical University of Lublin, Lublin, Poland
Medical University of Lodz, Łódź, Poland
Hemo Medica Ukraine Ltd, Uzhhorod, Zakarpatska, Ukraine
Lviv State Center for Disease Control and Prevention, Lviv, Ukraine
3rd City Clinical Hospital of Lviv, Lviv, Ukraine