1 Department of Health Sciences, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, FA10, Groningen, 9700 AD, The Netherlands. b.j.m.geboers@umcg.nl.
2 Norwich Medical School, Faculty of Medicine & Health Sciences, University of East Anglia, Norwich, UK.
3 Department of Communication and Information Studies, Faculty of Arts, University of Groningen, Groningen, The Netherlands.
4 Department of Health Sciences, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, FA10, Groningen, 9700 AD, The Netherlands.