1. Department of Plastic, Reconstructive & Aesthetic Surgery, University Hospitals of Geneva, University of Geneva, Geneva, Switzerland.
2. Department of Human Genetics and Development, Faculty of Medicine, University of Geneva, Geneva, Switzerland.
3. Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
4. Institute for Cellular and Molecular Medicine, University of Pretoria, Pretoria, South Africa.