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