[1] Comenius Univ, Bratislava, Slovakia
[2] Univ Hosp, Dept Internal Med 2, Bratislava, Slovakia
[3] St Annes Univ Hosp, Dept Internal Med 2, Brno, Czech Republic
[4] Cent Univ Hosp Asturias HUCA, Dept Gastroenterol, Oviedo, Spain
[5] Kyoritsu Womens Univ, Fac Home Econ, Div Clin Nutr, Tokyo, Japan