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. 2015 Dec 9;5(12):e009764. doi: 10.1136/bmjopen-2015-009764

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

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Forrest plot depicting three scenarios of total sample size from a total of 90 participants (scenario 1), 105 (scenario 2) and 120 participants (scenario 3) with the respective with of 95% CIs. HbA1c, glycated haemoglobin N, number; MD, mean difference.