- Correspondence to Dr Joseph Buckwalter, Department of Orthopaedic Surgery & Rehabilitation, University of Iowa Hospitals & Clinics, 200 Hawkins Drive, 01078 JPP, Iowa City, Iowa 52242, USA;
- Received August 14, 2016
- Revised November 18, 2016
- Accepted November 26, 2016
- First published January 5, 2017.
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