1. Departments of Pathology, Boston Children’s Hospital, Massachusetts, USA
2. Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
3. Department of Pathology, Faculty of Medicine and Health Science, Stellenbosch University, Western Cape, South Africa
4. National Health Laboratory Services, Port Elizabeth, South Africa
5. Department of Obstetrics and Gynecology, Faculty of Medicine and Health Science, Stellenbosch University, Western Cape, South Africa
6. Center for Health Outcomes & Prevention, Sanford Research, Department of Pediatrics & Ob-Gyn, University of South Dakota Sanford School of Medicine, Sioux Falls, South Dakota, USA
7. Department of Pathology, School of Medicine and Health Sciences, University of North Dakota, North Dakota, USA
8. Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA