1. Bureau of Drug Research, Drugs Directorate, Health Protection Branch, Health Canada, US.
2. Sir F. G. Banting Research Centre, Postal Locator 2201A, Tunney's Pasture, Ottawa, ON, CA, K1A 0L2.
3. Head, Spectroscopy Section, Pharmaceutical Chem. Div. Drugs Directorate, Health Protection Branch, Health Canada Banting Research Center (2201A) Tunneys Pasture, Ottawa, ON CA, K1A 0L2.
4. Department of Chemistry, Queen's University, Kingston, ON, CA, K7L 3N6.