1. Radiology Unit Istituto Diagnostico Varelli Naples Italy
2. Clinic of Dermatology and Allergology University Clinic Ulm Germany
3. Universidad del Rosario, Private Practice, Ultrasonido Altamente Especializado Bogotá Colombia
4. Clinica Cavallieri Rio de Janeiro Brazil
5. Department of Dermatology Institute for Diagnostic Imaging and Research of the Skin and Soft Tissues Clinic, University of Chile and Pontifical Catholic University of Chile Santiago Chile