1 Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare System, West Haven, CT, USA.
2 Unit of Internal Medicine and Hepatology, Department of Medicine, University of Padova, Italy. Electronic address: pangeli@unipd.it.
3 Division of Nephrology & Hypertension, Department of Medicine, University of Southern California, Los Angeles, CA, USA.
4 Division of Nephrology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.