1. Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
2. Department of Biology, University of Waterloo, Waterloo, Ontario, Canada.
3. Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario, Canada.
4. Nestlé Research Center, Lausanne, Switzerland.
5. Department of Biology, Wilfrid Laurier University, Waterloo, Ontario, Canada.