1. Department of Hepatology and Gastroenterology, Angers University, Angers Teaching Hospital, Angers, France
2. Department of Gastroenterology, Georges Pompidou European Hospital, Paris, France
3. Department of Hepatology and Gastroenterology, Lyon 1 University Claude Bernard, Edouard Herriot hospital, Lyon, France
4. Department of Hepatogastroenterology, Trocadero Private Hospital, Paris, France
5. Department of Hepatogastroenterology, Mermoz Private Hospital, Lyon, France