Piotr Zelga, MD, PhD, Department of General and Colorectal Surgery, Medical University of Lodz, Lodz, Poland.
Piotr Kluska, MD, Department of General and Colorectal Surgery, Medical University of Lodz, Lodz, Poland.
Marta Zelga, MD, Department of Pediatric Surgery, Urology and Transplantology, Polish Mother's Memorial Hospital Research Institute, Lodz, Poland.
Joanna Piasecka-Zelga, PhD, Research Laboratory for Medicine and Veterinary Products in the GMP Quality System, Nofer Institute of Occupational Medicine, Lodz, Poland.
Adam Dziki, MD, PhD, Department of General and Colorectal Surgery, Medical University of Lodz, Lodz, Poland.
Correspondence: Piotr Zelga, MD, PhD, Department of General and Colorectal Surgery, Medical University of Lodz, Plac Hallera 1, 90-647 Lodz, Poland ([email protected] tel).
Piotr Zelga and Piotr Kluska contributed to this work equally.
The authors declare no conflicts of interests.