1. Division of Gastroenterology and Hepatology and Microbiome Core Facility, Department of Medicine, Center for Gastrointestinal Biology and Disease, University of North Carolina, Chapel Hill, North Carolina, USA
2. AgResearch Ltd., Palmerston North, New Zealand
3. Riddet Institute, Massey University, Palmerston North, New Zealand
4. Departments of Anthropology and Nutrition, University of North Carolina, Chapel Hill, North Carolina, USA