1. Kharkiv National Medical University, Kharkiv, Ukraine, State Institution ”Zaitsev V. T. Institute of General and Urgent Surgery of National Academy of Medical Sciences of Ukraine”, Kharkiv, Ukraine
2. State Institution ”Zaitsev V. T. Institute of General and Urgent Surgery of National Academy of Medical Sciences of Ukraine”, Kharkiv, Ukraine
3. Karazin V. N. Kharkiv National University, Kharkiv, Ukraine
4. Kharkiv National Medical University, Kharkiv, Ukraine