1. Institute of Internal Medicine, Policlinico “A. Gemelli,” Rome, Italy;
2. Institute of Human Anatomy and Cell Biology, Policlinico “A. Gemelli,” Rome, Italy, and the Rehabilitation Research Center “Armonia,” Latina, Italy;
3. Foot Care Unit, Policlinico “A. Gemelli,” Rome, Italy;
4. Institute of Biochemistry, Policlinico “A. Gemelli,” Rome, Italy;
5. Diabetes Center, Policlinico “A. Gemelli,” Rome, Italy;
6. Institute of Orthopedic Surgery, Policlinico “A. Gemelli,” Rome, Italy.