Guyatt, G., Oxman, A. D., Kunz, R., Brozek, J., Alonso-Coello, P., Rind, D., … Schunemann, H. J. (2011). GRADE guidelines: 6. Rating the quality of evidence-imprecision. Chinese Journal of Evidence-Based Medicine, 11(12), 1435–1443.

Guyatt, G., A. D. Oxman, R. Kunz, J. Brozek, P. Alonso-Coello, D. Rind, P. J. Devereaux, et al. “GRADE guidelines: 6. Rating the quality of evidence-imprecision.” Chinese Journal of Evidence-Based Medicine 11, no. 12 (January 1, 2011): 1435–43.

Guyatt G, Oxman AD, Kunz R, Brozek J, Alonso-Coello P, Rind D, et al. GRADE guidelines: 6. Rating the quality of evidence-imprecision. Chinese Journal of Evidence-Based Medicine. 2011 Jan 1;11(12):1435–43.

Guyatt, G., et al. “GRADE guidelines: 6. Rating the quality of evidence-imprecision.” Chinese Journal of Evidence-Based Medicine, vol. 11, no. 12, Jan. 2011, pp. 1435–43.

Guyatt G, Oxman AD, Kunz R, Brozek J, Alonso-Coello P, Rind D, Devereaux PJ, Montori VM, Freyschuss B, Vist G, Jaeschke R, Williams JW, Murad MH, Sinclairk D, Falck-Ytter Y, Meerpohl J, Whittington C, Thorlund K, Andrews J, Schunemann HJ. GRADE guidelines: 6. Rating the quality of evidence-imprecision. Chinese Journal of Evidence-Based Medicine. 2011 Jan 1;11(12):1435–1443.