1. Department of Radiodiagnosis, Basavatarakam Indo-American Cancer Institute and Research Centre, Hyderabad, India
2. Departments of Dermatology, Faculties of Medicine, University of Chile and Pontifical Catholic University of Chile, Santiago, Chile
3. Istituto Diagnostico Varelli, Naples, Italy
4. Dermatology Service, Hospital Universitario, Puerta de Hierro, Majadahonda, Madrid, Spain