1. H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
2. Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
3. Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
4. Chapman University School of pharmacy, Irvine, CA, USA