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.
F. Molnar, B. Hutton, and D. Fergusson. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 179 (8):
751-3(October 2008)4563<br/>PUBM: Print; JID: 9711805; ppublish;<br/>Dades censurades; LOCF; Bias.