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Powell DEB. . BMJ. 2020;371:m4391doi: 10.1136/bmj.m4391.
Powell, D. E. B. (2020). . BMJ (Clinical research ed.), 371m4391. https://doi.org/10.1136/bmj.m4391
Powell, David E B. "." BMJ (Clinical research ed.) vol. 371 (2020): m4391. doi: https://doi.org/10.1136/bmj.m4391
Powell DEB. . BMJ. 2020 Nov 18;371:m4391. doi: 10.1136/bmj.m4391. PMID: 33208387.
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BMJ. 2020 Nov 18;371:m4391. doi: 10.1136/bmj.m4391.

[No title available]

BMJ (Clinical research ed.)

David E B Powell

Affiliations

  1. Peniel SA32 7HF, UK.

PMID: 33208387 DOI: 10.1136/bmj.m4391

[No abstract available.]

Conflict of interest statement

Competing interests: None declared.

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