Received: 1 December 2020
Accepted: 8 June 2021
First Online: 12 June 2021
: Due to the nature of this research (portal use was part of the regular care process) and the voluntary nature of completing the survey, this study did not require formal ethical approval, according to Dutch law. All participants provided informed consent.
: Not applicable.
: LvV is associate editor for BMC Medical Informatics and Decision Making. IF and MT declare they have no conflicting interests.