| Affiliation: | 1. Division of Gastrointestinal Surgery, Department of Surgery, University of Alabama at Birmingham, KB427, 1720 2nd Avenue South, UAB, 35294-0016, Birmingham, AL, USA;2. Division of Gastroenterology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA;3. Department of Surgery, Stanford University, Stanford, CA, USA;1. Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA;2. Sports Injury Services, Robert Jones & Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire SY10 7AG, UK;3. Institute of Science & Technology in Medicine, University of Keele, Arthritis Research Centre, Robert Jones & Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire SY10 7AG, UK |
