1. Assistant Professor, Department of Anesthesiology, Baylor College of Medicine, Houston, TX, USA
2. Department of Obstetrics & Gynecology, Baylor College of Medicine, Houston, TX, USA
3. Assistant Professor, Department of Neurosurgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. Clinical Officer, Kamuzu Central Hospital, Lilongwe, Malawi
5. Professor, Department of Neurosurgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
6. Professor, Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA