Inserm,;
U748,;
Hopitaux;
Universitaires;
de;
Strasbourg,;
Universite;
Louis;
Pasteur,;
3;
Rue;
Koeberle,;
F-67000;
Strasbourg,;
France;
Service;
d'Hepatogastroenterologie,;
Hopitaux;
Universitaires;
de;
Strasbourg,;
Strasbourg,France;
Department;
of;
Medicine;
Ⅱ,;
University;
of;
Freiburg,;
Germany;