1. Department of Chemistry and BiochemistryConcordia University 7141 Sherbrooke Street West Montreal QC H4B 1R6 Canada
2. Department of ChemistryUniversity of Waterloo 200 University Avenue Waterloo ON N2L 3G1 Canada
3. Current address: Restek Corporation Bellefonte PA 16823 USA
4. Current address: Department of Pharmacodynamics and Molecular PharmacologyFaculty of PharmacyCollegium Medicum in BydgoszczNicolaus Copernicus University in Toruń Bydgoszcz Poland
5. Neuroimaging Research SectionCentre for Addiction and Mental Health 250 College Street Toronto ON M5T 1R8 Canada
6. Harquail Centre for NeuromodulationSunnybrook Research InstituteSunnybrook Health Sciences Centre 2075, Bayview Avenue Toronto ON M4N 3M5 Canada