1. a School of Pharmacy, Memorial University of Newfoundland, St. John's, NF, Canada A1B 3V6
2. b Biomedical Sciences, Memorial University of Newfoundland, St. John's, NF, Canada A1B 3V6
3. c School of Pharmacy, Memorial University of Newfoundland, St. John's, NF, Canada A1B 3V6; Department of Pharmaceutical Sciences, College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar