title: Editorial: Special issue on health behavior change support systems.
authors.affiliation: University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands; University of Oulu, Oulu Advanced Research on Service and Information Systems, Faculty of Information Technology and Electrical Engineering, Oulu, Finland; Abo Akademi University, Turku, Finland; University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands. Electronic address: s.m.kelders@utwente.nl.
authors.forename: Saskia M
authors.initials: SM
authors.lastname: Kelders
authors.affiliation: University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands; University of Oulu, Oulu Advanced Research on Service and Information Systems, Faculty of Information Technology and Electrical Engineering, Oulu, Finland; Abo Akademi University, Turku, Finland; University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands.
authors.forename: Harri
authors.initials: H
authors.lastname: Oinas-Kukkonen
authors.affiliation: University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands; University of Oulu, Oulu Advanced Research on Service and Information Systems, Faculty of Information Technology and Electrical Engineering, Oulu, Finland; Abo Akademi University, Turku, Finland; University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands.
authors.forename: Anssi
authors.initials: A
authors.lastname: Oörni
authors.affiliation: University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands; University of Oulu, Oulu Advanced Research on Service and Information Systems, Faculty of Information Technology and Electrical Engineering, Oulu, Finland; Abo Akademi University, Turku, Finland; University of Twente, Centre for eHealth ad Wellbeing Research, Department of Psychology, Health and Technology, Enschede, The Netherlands.
authors.forename: Julia E W C
authors.initials: JE
authors.lastname: van Gemert-Pijnen