1. Hair and Skin Research Laboratory, Division of Dermatology, Department of Medicine, Faculty of Health Sciences and Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa.
2. Centre for Medical Research, Institute of Medical Research and Medical Plant Studies, Ministry of Scientific Research and Innovation, Yaoundé, Cameroon.
3. Plastic and Reconstructive Surgery Research, Division of Musculoskeletal & Dermatological Sciences, NIHR Manchester Biomedical Research Centre, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom.