1. The Indiana Hand to Shoulder Center, 8501 Harcourt Road, Indianapolis, IN 46260, USA
2. Department of Orthopaedics, Allegheny General Hospital, 1307 Federal St, Suite 200, Pittsburgh, PA 15212, USA
3. Department of Orthopaedics, Indiana University School of Medicine, 541 Clinical Drive Suite 600, Indianapolis, IN 46202, USA