Letter to the editor: vaccination against upper respiratory infections is a matter of survival in alcoholic liver disease. Issue 1 (18th March 2022) - Itzel, Timo; Falconer, Thomas; Daza, Jimmy; Roig, Ana; Park, Jimyung; Cheong, Jae Youn; Park, Rae Woong; Wiest, Isabella; Ebert, Matthias; Hripcsak, George; Teufel, Andreas