1. Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle, Germany
2. Medicinal Plants Division, Research Center, Dhofar University, Salalah, Oman
3. Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan
4. Faculty of Pharmacy, Capital University of Science & Technology, Islamabad, Pakistan
5. Hormel Institute, University of Minnesota, Austin, USA
6. Department of Chemistry and Polymer Science, University of Stellenbosch, Stellenbosch, South Africa