Oeh, speaking of which - we also created an OSF project for the symposium already, with its own ShortDOI: https://doi.org/jxkz. This is where we will post the slides and references to other materials (as well as at https://osf.io/meetings/EHPS2023.
This allowed us to include that ShortDOI URL in the abstract itself when we submitted the abstracts. Assuming this will be retained in the abstract book, that means everybody will always easily be able to find the slides
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