[1] Lithuanian Univ Hlth Sci, Med Acad, Dept Cardiac Thorac & Vasc Surg, LT-50009 Kaunas, Lithuania
[2] Lithuanian Univ Hlth Sci, Med Acad, Dept Anaesthesiol, LT-50009 Kaunas, Lithuania
[3] Lithuanian Univ Hlth Sci, Med Acad, Dept Internal Dis, LT-50009 Kaunas, Lithuania