David E. F. W. M. van Toledo

1   Department of Gastroenterology and Hepatology, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, Netherlands

2   Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, Netherlands (Ringgold ID: RIN571165)

3   Cancer Centre Amsterdam, Amsterdam University Medical Centres, location Academic Medical Centre, Amsterdam, Netherlands

,

Joep E. G. IJspeert

1   Department of Gastroenterology and Hepatology, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, Netherlands

2   Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, Netherlands (Ringgold ID: RIN571165)

3   Cancer Centre Amsterdam, Amsterdam University Medical Centres, location Academic Medical Centre, Amsterdam, Netherlands

4   Department of Gastroenterology, Netherlands Cancer Institute-Antoni Van Leeuwenhoek, Amsterdam, Netherlands

,

Arne G. C. Bleijenberg

1   Department of Gastroenterology and Hepatology, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, Netherlands

2   Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, Netherlands (Ringgold ID: RIN571165)

3   Cancer Centre Amsterdam, Amsterdam University Medical Centres, location Academic Medical Centre, Amsterdam, Netherlands

,

Anne Depla

5   Department of Gastroenterology, DC Klinieken, Amsterdam, Netherlands

,

Nahid S. M. Montazeri

6   Biostatistics Unit, Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, location Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands

,

1   Department of Gastroenterology and Hepatology, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, Netherlands

2   Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, Netherlands (Ringgold ID: RIN571165)

3   Cancer Centre Amsterdam, Amsterdam University Medical Centres, location Academic Medical Centre, Amsterdam, Netherlands

Registration number (trial ID): NL8385, Trial registry: Netherlands National Trial Register (http://www.trialregister.nl), Type of Study: Randomized controlled multicenter study