1. 1Anatomical Pathology, National Health Laboratory Service, Chris Hani Baragwanath Academic Hospital, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa;
2. 2Department of Dermatology, Gauteng Department of Health, Chris Hani Baragwanath Academic Hospital, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa