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. 2021 Mar 9;4(1):115–131. doi: 10.1136/bmjnph-2020-000188

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Included randomised controlled trials, investigating the effects of the Mediterranean diet interventions, rated against the Cochrane risk of bias 2.0 tool.³⁰ *Publication excluding participants who had deviated from the randomisation protocol. †Concerns regarding randomisation rose post publication. ‡Personnel blinding was reported; however, compliance assessment indicates inadequate blinding of the intervention personnel.