Chan, A. W., Tetzlaff, J. M., Altman, D. G., Laupacis, A., Gøtzsche, P. C., Krleža-Jerić, K., … Moher, D. (2013). Spirit 2013 statement: Defining standard protocol items for clinical trials. Chinese Journal of Evidence-Based Medicine, 13(12), 1501–1507. https://doi.org/10.7507/1672-2531.20130256

Chan, A. W., J. M. Tetzlaff, D. G. Altman, A. Laupacis, P. C. Gøtzsche, K. Krleža-Jerić, A. Hróbjartsson, et al. “Spirit 2013 statement: Defining standard protocol items for clinical trials.” Chinese Journal of Evidence-Based Medicine 13, no. 12 (January 1, 2013): 1501–7. https://doi.org/10.7507/1672-2531.20130256.

Chan AW, Tetzlaff JM, Altman DG, Laupacis A, Gøtzsche PC, Krleža-Jerić K, et al. Spirit 2013 statement: Defining standard protocol items for clinical trials. Chinese Journal of Evidence-Based Medicine. 2013 Jan 1;13(12):1501–7.

Chan, A. W., et al. “Spirit 2013 statement: Defining standard protocol items for clinical trials.” Chinese Journal of Evidence-Based Medicine, vol. 13, no. 12, Jan. 2013, pp. 1501–07. Scopus, doi:10.7507/1672-2531.20130256.

Chan AW, Tetzlaff JM, Altman DG, Laupacis A, Gøtzsche PC, Krleža-Jerić K, Hróbjartsson A, Mann H, Dickersin K, Berlin JA, Doré CJ, Parulekar WR, Summerskill WSM, Groves T, Schulz KF, Sox HC, Rockhold FW, Rennie D, Moher D. Spirit 2013 statement: Defining standard protocol items for clinical trials. Chinese Journal of Evidence-Based Medicine. 2013 Jan 1;13(12):1501–1507.