1. Division of Gastroenterology, Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas
2. Department of Microbiology, Immunology and Parasitology, Louisiana State University School of Medicine, New Orleans, Louisiana
3. Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences, Uppsala, Sweden
4. BioGaia AB, Stockholm, Sweden