Affiliation: | B. Szostakowski, Consultant Orthopaedic Surgeon, Department of Soft Tissue/Bone Sarcoma and Melanoma, The Maria Sklodowska-Curie Institute — Oncology Center, Warsaw, Poland;M. DeMaio, Clinical Professor, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA |