Beynnon B D, Risberg M A, Tjomsland O, Ekeland A, Fleming B C, Peura G D, Johnson R J
Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont, Burlington 05405-0084, USA.
Am J Sports Med. 1997 Mar-Apr;25(2):203-6. doi: 10.1177/036354659702500211.