Validity and reliability of the Greek version of the American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form oleh Konstantinos E. Tolis, MD, MSc, Antonis A. Galanos, PhD, Emmanouil M. Fandridis, MD, PhD, Konstantinos C. Soultanis, MD, PhD, Ioannis K. Triantafyllopoulos, MD, PhD