1. Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA.
2. Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA.
3. Division of Spine Surgery, Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA.
4. Division of Sports Medicine, Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA.