1. Research Institute for Health Sciences; Chiang Mai University; Chiang Mai Thailand
2. Division of Vascular Surgery, Department of Surgery, Faculty of Medicine; Thammasat University (Rangsit Campus); Pathum thani Thailand
3. Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences; University of Oxford; Oxford UK
4. Division of Vascular and Endovascular Surgery, Department of Surgery, Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand