1 Hepatology, Department of Clinical Research, University of Bern, Bern, Switzerland; University Clinic for Visceral Surgery and Medicine, Inselspital Bern, Bern, Switzerland.
2 Hepatology, Department of Clinical Research, University of Bern, Bern, Switzerland; University Clinic for Visceral Surgery and Medicine, Inselspital Bern, Bern, Switzerland. Electronic address: jf.dufour@insel.ch.