Benchmarking usability of patient portals in Estonia, Finland, Norway, and Sweden. - Sari Kujala; Saija Simola; Bo Wang 141; Hedvig Soone; Josefin Hagström; Annika Bärkås; Iiris Hörhammer; Åsa Cajander; Asbjørn Johansen Fagerlund; Bridget Kane; Anna Kharko; Eli Kristiansen; et al. (Int. J. Medical Informatics, 2024)