1. Cmed Research Inc., Morrisville, NC 27560, USA
2. Clinical Laboratory, Division of Nephrology and Hypertension, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
3. Youthoria, Youth Research Organization, 30-363 Kraków, Poland
4. Section of Clinical Biochemistry and School of Medicine, University Hospital of Verona, 37129 Verona, Italy
5. Faculty of Medicine, Jagiellonian University Medical College, 31-008 Kraków, Poland