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. 2019 Nov 4;161(3):574–583. doi: 10.1097/j.pain.0000000000001744

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Copyright © 2019 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the International Association for the Study of Pain.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 1. — Flowchart of study population. DD2, Danish Centre for strategic research in type 2 diabetes; MNSIq, Michigan Neuropathy Screening Instrument questionnaire, DN4, Douleur Neuropathique en 4 questions. ^aReason for nonparticipation: No reason provided: 89 (39.6%), no surplus energy because of other comorbidity: 18 (8.0%), no surplus energy because of death/illness among near relative: 3 (1.3%), dementia and other conditions hindering adequate answers to the questionnaire: 21 (9.3%), too busy/no free time: 4 (1.8%), well-regulated/solely diet-treated thus feeling the questionnaire is not relevant: 25 (11.1%), mail delivery not possible (invalid address, full or locked mailbox): 31 (13.8%), died in the period February to end of questionnaire survey: 9 (4.0%), and other single reasons: 25 (11.1%).