1. Department of Biochemistry, University of Auckland, Private Bag, Auckland, New Zealand.
2. Department of Medical Biochemistry, University of Calgary, Health Sciences Centre, 3330 Hospital Drive N.W.,Calgary, Alberta T2N 4NI, Canada
3. Connaught Research Institute, 1755 Steeles Avenue West (Building 72, Room 309), Willowdale, Ontario M2R 3T4, Canada
4. Department of Anatomy, School of Medicine in Shreveport, Shreveport, LA 71130, U.S.A.
5. Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada,
6. Kyushu Dental College, 2-6-1 Manazuru, Kokurakita-Ku, Kitakyushin 803, Japan
7. University of Toronto Department of Gastroenterology, Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
8. University of Toronto Department of Biochemistry, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada