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. 2021 Apr 30;12:637392. doi: 10.3389/fendo.2021.637392

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Copyright © 2021 Tseng

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Flowchart showing the procedures followed in creating the unmatched original cohort and a cohort of 1:1 matched pairs of ever users and never users of vildagliptin from the reimbursement database of the National Health Insurance.