1. Department of Biophysics, Collegium Medicum in Bydgoszcz, Nicholaus Copernicus University, Jagiellońska 13, 85-067 Bydgoszcz, Poland
2. Department of General and Endocrine Surgery, University Hospital, Collegium Medicum in Bydgoszcz Nicholaus Copernicus University, M. Skłodowskiej-Curie 9, 85-094 Bydgoszcz, Poland