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2. SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials
3. International Committee of Medical Journal Editors. Recommendations for the conduct reporting editing and publication of scholarly work in medical journals. Updated May 2022.https://www.icmje.org/icmje‐recommendations.pdf(viewed July 2022).
4. Changes to aspects of ongoing randomised controlled trials with fixed designs
5. Reacting to prognostic covariate imbalance in randomised controlled trials