Table 1

Study dates

ActionStudy datesInvolved colleagues
Ethical committeeMarch–June 2017Working group
Submission study proposalDec 2016–August 2017Working group
Invitation centresOctober–January 2017
Translation questionnairesMarch–September 2017All
Study agreementMay–June 2017All
Data collectionSeptember 2017–September 2018All
Data cleaningSeptember 2018–December 2018Giessen
Data analysisJanuary 2019–April 2019Jörg Kupfer and Florence Dalgard
First articleMay–November 2019All
Following articlesJanuary 2020–January 2022All