1. School of Medical Sciences, Örebro University, Örebro, Sweden;
2. Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden;
3. Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA;
4. Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden