1Department of Pharmaceutical Sciences, Faculty of Pharmacy, North Dakota State University, Fargo, ND 58105, USA.
2Division of Pharmaceutical Chemistry, Faculty of Pharmacy, Rhodes University, P. O. Box 94, Grahamstown 6140, South Africa.
3Department of Pharmaceutical Sciences, Albany College of Pharmacy and Health Sciences-Vermont Campus, Colchester, VT 05446, USA.
Email: [email protected]