Piotrowicz Grażyna, Stępień Beata, Klufczyńska Agnieszka
Gastroenterology Department, Hospital of Ministry of Home Affairs, Gdansk, Poland.
Department of Internal Medicine and Gastroenterology, Central Clinical Hospital of Ministry of Home Affairs, Warsaw, Poland.
Prz Gastroenterol. 2017;12(1):66-67. doi: 10.5114/pg.2016.62151. Epub 2016 Sep 6.