<p>Copyright 2015 The Authors. Published by Elsevier Inc. on behalf of Journal of Shoulder and Elbow Surgery Board of Trustees. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).</p>
Except where otherwise noted, this item's license is described as <p>Copyright 2015 The Authors. Published by Elsevier Inc. on behalf of Journal of Shoulder and Elbow Surgery Board of Trustees. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).</p>