1. Endocrinology and Metabolism Unit, Faculty of Medicine, Prince of Songkla University, Hatyai, Thailand
2. Clinical Nutrition and Obesity Medicine Unit, Faculty of Medicine, Prince of Songkla University, Hatyai, Thailand
3. Department of Psychiatry, Faculty of Medicine, Prince of Songkla University, Hatyai, Thailand
4. Department of Ophthalmology, Faculty of Medicine, Prince of Songkla University, Hatyai, Thailand
5. Leeds Institute of Cardiovascular and Metabolic Medicine, Faculty of Medicine and Health, University of Leeds, Leeds, UK