GRADE guidelines: 7. Rating the quality of evidence - inconsistency

Guyatt GH, Oxman AD, Kunz R, Woodcock J, Brozek J, Helfand M, Alonso-Coello P, Glasziou P, Jaeschke R, Akl EA, Norris S, Vist G, Dahm P, Shukla VK, Higgins J, Falck-Ytter Y, Schünemann HJ; The GRADE Working Group. GRADE guidelines: 7. Rating the quality of evidence - inconsistency. Journal of Clinical Epidemiology 2011; 64: 1294-1302 . Vitenskapelig artikkel 2011.Journal of Clinical Epidemiology 2011; 64: 1294-1302