1. Department of Psychiatry, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
2. Department of Psychiatry, Faculty of Medicine, University of Ruhuna, Galle, Sri Lanka
3. Department of Psychiatry, Faculty of Medicine and Allied Sciences, University of Rajarata, Saliyapura, Sri Lanka
4. Department of Psychiatry, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka
5. Department of Psychiatry, Faculty of Medical Sciences, University of Sri Jayawardenapura, Nugegoda, Sri Lanka
6. Department of Psychiatry, Faculty of Medicine, University of Peradeniya, Kandy, Sri Lanka
7. Oxford Health NHS Foundation Trust, Oxford, UK
8. Oxford University, Oxford, UK