1 AP-HP, hôpital Cochin, gastroenterology and endoscopy department, and Paris-Descartes Université, Paris 05, France.
2 AP-HP, hôpital Pitié-Salpêtrière, department of hepatobiliary surgery and liver transplantation, and Sorbonne Universités, UPMC Université Paris 06, France. Electronic address: fabiano.perdigao@aphp.fr.