Clinical coding of long COVID in English primary care: a federated analysis of 58 million patient records in situ using OpenSAFELY.
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Br J Gen Pract. 2021 Oct 28;71(712):e806-e814. doi: 10.3399/BJGP.2021.0301. Print 2021 Nov.
Br J Gen Pract. 2021.
PMID: 34340970
Free PMC article.