1. Departments of Psychiatry and Neurology & Ophthalmology, Michigan State University, East Lansing, Michigan.
2. Department of Psychiatry, Makerere University School of Medicine, Kampala, Uganda.
3. Department of Statistics and Probability, Michigan State University, East Lansing, Michigan.
4. Department of Paediatrics and Child Health, Makerere University School of Medicine, Kampala, Uganda.
5. Departments of Psychiatry, Neurology, and Psychology, School of Nursing, University of Michigan, Ann Arbor, Michigan.