[1] St Elizabeth Hosp, Warsaw Proctol Ctr, Warsaw, Poland
[2] Reg Hosp, Dept Gen Surg, Colorectal & Pelv Floor Unit, Piazzale Osped 1, I-31100 Treviso, Italy
[3] Lords Transfigurat Hosp, Dept Gen & Oncol Surg Subunit Vasc Surg, Warsaw, Poland
[4] St Barbara Reg Specialist Hosp 5, Clin Dept Gen & Colorectal Surg & Multiple Trauma, Sosnowiec, Poland
[5] Natl Inst Geriatr Rheumatol & Rehabil, Dept Gerontol & Publ Hlth, Warsaw, Poland
[6] Med Univ Warsaw, Fac Med 2, Dept Diagnost Imaging, Dept Radiol,Natl Inst Geriatr Rheumatol & Rehabil, Warsaw, Poland