Author/Authors :
weigt, jochen otto-von-guericke university magdeburg - department of gastroenterology, hepatology and infectious diseases, Magdeburg, Germany , obst, wilfried otto-von-guericke university magdeburg - department of gastroenterology, hepatology and infectious diseases, Magdeburg, Germany , malfertheiner, peter otto-von-guericke university magdeburg - department of gastroenterology, hepatology and infectious diseases, Magdeburg, Germany
