1. Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
2. St. Elisabeth University, Bratislava, Slovakia
3. Research, Panaceo International GmbH, Villach/Gödersdorf, Austria, Villach, Austria
4. Department of Clinical and Health Psychology, University of Vienna, Vienna, Austria
5. KIM III/Gastroenterol., MedUniWien, Vienna, Austria