1. Department of Pediatric Neurology, Red Cross War Memorial Children’s Hospital, School of Child and Adolescent Health, University of Cape Town, Cape Town, South Africa
2. Rheumatic Fever Clinic, Red Cross War Memorial Children’s Hospital, School of Child and Adolescent Health, University of Cape Town, Cape Town, South Africa
3. Division of Child & Adolescent Psychiatry, University of Cape Town, Cape Town, South Africa
4. MRC Unit on Anxiety and Stress Disorders, Department of Psychiatry, University of Cape Town, Cape Town, South Africa