Järvinen Teppo L N, Michaëlsson Karl, Jokihaara Jarkko, Collins Gary S, Perry Thomas L, Mintzes Barbara, Musini Vijaya, Erviti Juan, Gorricho Javier, Wright James M, Sievänen Harri
Department of Orthopaedics and Traumatology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland.
Department of Surgical Sciences, Section of Orthopaedics, Uppsala University, Uppsala, Sweden.
BMJ. 2015 May 26;350:h2088. doi: 10.1136/bmj.h2088.