The authors regret that the affiliation for the second author, Irja Haapala is incorrect:
School of Applied Educational Sciences and Teacher Education, University of Eastern Finland, Savonlinna, Finland
Currently a Visiting Research Fellow, National Ageing Research Institute, Melbourne, Victoria, Australia
The correct affiliation is:
Faculty of Life and Social Sciences, Swinburne University of Technology, POB 218, Hawthorn, Victoria 3122, Australia
Currently on secondment from School of Applied Educational Sciences and Teacher Education, University of Eastern Finland, Savonlinna, Finland
Currently a Visiting Research Fellow, National Ageing Research Institute, Melbourne, Victoria, Australia