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• Exploratory data analysis on the effects of non pharmacological treatment for knee osteoarthritis

  Authors: Ceccarelli F, Perricone C, Alessandri C, Modesti M, Iagnocco A, Croia C, Di Franco M, Valesini G Source: Clin Exp Rheumatol. 2010 Mar-Apr;28(2):250-3 DOI: Not specified Language: English Availability: full text

• Single data extraction generated more errors than double data extraction in systematic reviews

  Authors: Buscemi N, Hartling L, Vandermeer B, Tjosvold L, Klassen TP Source: J Clin Epidemiol. 2006 Jul;59(7):697-703 DOI: 10.1016/j.jclinepi.2005.11.010 Language: English Availability: abstract