[1] 4th Mil Teaching Hosp, Dept Surg, PL-50981 Wroclaw, Poland
[2] Wroclaw Med Univ, Fac Hlth Sci, Dept Nursing & Obstet, Div Anaesthesiol & Surg Nursing, PL-51618 Wroclaw, Poland
[3] Wroclaw Med Univ, Fac Med, Student Res Club 180, PL-50367 Wroclaw, Poland
[4] Kazimierz Pulaski Univ Technol & Humanities Radom, Fac Med Sci & Hlth Sci, PL-26600 Radom, Poland