1 3rd Department of General Surgery, Jagiellonian University Medical College, ul. Pradnicka 35-37, 31-202, Kraków, Poland. m.romaniszyn@mp.pl.
2 Department of Reproductive Biology and Stem Cells, Institute of Human Genetics, Polish Academy of Science, Strzeszynska 32, 60-479, Poznan, Poland.
3 3rd Department of General Surgery, Jagiellonian University Medical College, ul. Pradnicka 35-37, 31-202, Kraków, Poland.
4 Department of Reproductive Biology and Stem Cells, Institute of Human Genetics, Polish Academy of Science, Strzeszynska 32, 60-479, Poznan, Poland. kurpimac@man.poznan.pl.