1. Foot Ulcer Trials Unit, Diabetes and Endocrinology, City Hospital, Nottingham, U.K.
2. Muhimbili University College of Health Sciences, Dar es Salaam, Tanzania
3. Abbas Medical Centre, Dar es Salaam, Tanzania
4. Baqai Institute of Diabetology and Endocrinology, Baqai Medical University, Karachi, Pakistan
5. Department of Internal Medicine, Marianenkrankenhaus GmBH, Soest, Germany