1. Department of Family Medicine, Walter Sisulu University, Eastern Cape, South Africa
2. Department of Family Medicine, Cecilia Makiwane Hospital, East London Hospital Complex, Walter Sisulu University, Eastern Cape, South Africa
3. School of Laboratory Medicine & Medical Sciences, Department of Anatomy, University of KwaZulu-Natal, Durban, South Africa
4. School of Laboratory Medicine & Medical Sciences, Department of Clinical Anatomy, University of KwaZulu-Natal, Durban, South Africa