Title The microbiota in gastrointestinal pathophysiology : implications for human health, prebiotics, probiotics, and dysbiosis / edited by Martin H. Floch, MD, MACG, FACP, AGAF, Clinical Professor of Medicine, Department of Internal Medicine, Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, United States, Yehuda Ringel, MD, AGAF, FACG, Department of Gastroenterology, Rabin Medical Center, Petach Tikva, Israel, Adjunct Professor, Department of Medicine, University of North Carolina, School of Medicine at Chapel Hill, Chapel Hill, NC, United States, W. Allan Walker, MD, AGAF, FACG, Conrad Taff Professor of Nutrition and Professor of Pediatrics, Harvard Medical School, Mucosal Immunology Laboratory, Pediatric Gastroenterology and Nutrition, Massachusetts General Hospital for Children, Boston, MA, United States.