[1] Radboud Univ Nijmegen, Med Ctr, Dept Gastroenterol & Hepatol, POB 9101, NL-6500 HB Nijmegen, Netherlands
[2] Radboud Univ Nijmegen, Med Ctr, Radboud Inst Hlth Sci, NL-6525 ED Nijmegen, Netherlands
[3] Virgin Victory Univ Hosp, Inst Biomed Res Malaga IBIMA, Malaga, Spain
[4] Univ Malaga, Sch Med, Malaga, Spain
[5] Univ Malaga, Hosp Univ Virgen Victoria, Inst Invest Biomed Malaga, Unidad Gest Clin Aparato Digest,Ctr Invest Biomed, E-29071 Malaga, Spain
[6] Oslo Univ Hosp, Dept Transplantat Med, Div Canc Med Surg & Transplantat, Oslo, Norway
[7] Hannover Med Sch, Dept Gastroenterol Hepatol & Endocrinol, Hannover, Germany