1. Diabetes Centre-Diabetic Foot Clinic, Democritus University of Thrace, Alexandroupolis, Greece
2. National Institute for Health, Migration and Poverty (NIHMP), Rome, Italy
3. Environmental - Occupational Health Sciences and Non Communicable Diseases Research Group. Research Institute for Health Science, Chiang Mai University, Chiang Mai, Thailand
4. Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand