1. State Institution “Institute of Nephrology of the National Academy of Medical Science of Ukraine,” Kyiv, Ukraine; Dialysis Medical Center LLC “Nephrocenter”, Kyiv, Ukraine
2. State Institution “Institute of Nephrology of the National Academy of Medical Science of Ukraine,” Kyiv, Ukraine
3. Dialysis Medical Center LLC “Link-Medital”, Odesa, Ukraine
4. Dialysis Medical Center LLC “Nephrocenter”, Kyiv, Ukraine