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title: Presentations
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# Presentations



- <a href="https://bhfdsc.github.io/documentation/assets/images/hds_tb_token_pseudo_id_lookup_20240711.pdf" target="_blank">🪪 token_pseudo_id_lookup</a> - introducing a table to determine the type and quality of the pseudonymised patient identifiers in the NHS England SDE

- <a href="https://bhfdsc.github.io/documentation/assets/images/Coding Best Practice in the NHSE SDE Cluster.pptx" target="_blank">💻 Coding Best Practice in the NHS England SDE Cluster</a> - tips and advice on how to optimise running code in the NHS England SDE

- <a href="https://bhfdsc.github.io/documentation/assets/images/Onboarding unit_ defining timeframes.pptx" target="_blank">📅 Defining Timeframes</a> - advice on how to define study time periods