M. Ferreira, R. Herbert, M. Crowther, A. Verhagen, and A. Sutton. BMJ (Clinical research ed.), (January 2012)7186<m:linebreak></m:linebreak>JID: 8900488; epublish;<m:linebreak></m:linebreak>MDCI; RCT; Relació benefici/risc; Metaanàlisi.
R. Hiebert, and M. Nordin. European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, (January 2006)6042<m:linebreak></m:linebreak>LR: 20071115; JID: 9301980; RF: 56; 2005/11/01 received; 2005/11/02 accepted; 2005/11/30 aheadofprint; ppublish;<m:linebreak></m:linebreak>Mesures de resultats; Critical appraisal; Cirurgia.