1. Surgical Gastroenterology Laboratory, Institute for Digestive Research, Lithuanian University of Health Sciences, Eiveniu 4, 50103 Kaunas, Lithuania
2. Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, 1046 Blindern, 0317 Oslo, Norway
3. Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada
4. Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia
5. Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia