1. Memorial University of Newfoundland, St. John's, Newfoundland & Labrador, Canada
2. Medical Officer of Health, St. John, New Brunswick, Canada
3. Department of Laboratory Medicine, Saint John Regional Hospital, Saint John's, New Brunswick, Canada
4. Department of Pathology, Dalhousie University, St. John, New Brunswick, Canada
5. Division of Digestive Care and Endoscopy, Department of Medicine, Memorial University, St. John's, Newfoundland & Labrador, Nova Scotia, Canada