1. Wellington Laboratories Inc., 345
Southgate Drive, Guelph, Ontario Canada N1G 3M5
2. Department of Veterinary Physiology & Pharmacology, Texas A&M University, College Station, Texas 77843-4466, United States
3. Matson & Associates, Inc., 331 East Foster Avenue, State College, Pennsylvania 16801, United States
4. Ontario Ministry of the Environment, 125 Resources Road, Toronto, Ontario M9P 3 V6, Canada
5. Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
6. Department
of Chemistry, University of Guelph, Guelph, Ontario N1G 2W1, Canada