[1] Stuivenberg Ziekenhuis, Antwerp, Belgium
[2] Univ Amsterdam, Acad Med Ctr, Dept Gastroenterol & Hepatol, NL-1105 AZ Amsterdam, Netherlands
[3] SGS Life Sci, Antwerp, Belgium
[4] Janssen Infect Dis, Beerse, Belgium
[5] Janssen Infect Dis, Titusville, NJ USA