1. Instituto Nacional de Enfermedades Neoplasicas (INEN), Lima, Peru
2. Clinica Ziegler, Lima, Peru
3. Universidad Peruana de Ciencias Aplicas (UPC), Lima, Peru
4. University of Massachusetts Medical School, Worcester, Mass.
5. Universidad Cientifica del Sur, Lima, Peru
6. Department of Radiology, Clinical Ricardo Palma, Lima, Peru
7. Division of Plastic and Reconstructive Surgery, Department of Surgery, Tufts Medical Center, Boston, Mass.