1. Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 114 St-89 Ave., Edmonton, Alberta, Canada
2. Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin, Gyeonggi, 449-728, Korea
3. 3142H KATZ Centre for Pharmacy & Health Research, Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 11361-87 Ave, Edmonton, AB, T6G 2H7, Canada