[1] Univ Brussels, Erasme Univ Hosp, Dept Infect Dis, B-1070 Brussels, Belgium
[2] Univ Brussels, Erasme Univ Hosp, Dept Microbiol, B-1070 Brussels, Belgium
[3] Univ Brussels, Erasme Univ Hosp, Dept Digest Surg, B-1070 Brussels, Belgium
[4] Univ Brussels, Erasme Univ Hosp, Dept Intens Care, B-1070 Brussels, Belgium
[5] Univ Brussels, Erasme Univ Hosp, Dept Gastroenterol, B-1070 Brussels, Belgium