Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Save this search Download search results Subscribe to news feed Your filters: cql: parent exact "JMIR PUBLIC HEALTH AND SURVEILLANCE" Add to list Journal Article A1 open access Reasons for nonuse, discontinuation of use, and acceptance of additional functionalities of a COVID-19 contact tracing app : cross-sectional survey study Michel Walrave, Cato Waeterloos (UGent) and Koen Ponnet (UGent) (2022) JMIR PUBLIC HEALTH AND SURVEILLANCE. 8(1). Add to list Journal Article A1 open access Adoption of a contact tracing app for containing COVID-19 : a health belief model approach Michel Walrave, Cato Waeterloos (UGent) and Koen Ponnet (UGent) (2020) JMIR PUBLIC HEALTH AND SURVEILLANCE. 6(3).