1. Department of Botany and Plant Biotechnology, Auckland Park Campus, University of Johannesburg, Auckland Park, P.O. Box 524, Johannesburg 2006, South Africa
2. Systems Trichology London Ltd., 17 Blanchard Close, London SE9 4TZ, UK
3. WETHRIVVTM, 3805 Old Easton Road #305, Doylestown, PA 18902, USA
4. Rapaport Hair Institute, Englewood Cliffs, NJ 07632, USA