1. Department of Plant
and Soil Sciences, University of Pretoria, Pretoria 0002, South Africa
2. Natural Plant Products Division, CSIR-Institute of Himalayan Bioresources Technology, P.O. Box-6, Palampur, Himachal
Pradesh, India 176061
3. San Gallicano Dermatologic Institute, IRCCS, Via Elio Chianesi, 00144, Rome, Italy