- Correspondence to Dr Jukka Varelius, Department of Behavioural Sciences and Philosophy, University of Turku, Turku FIN20014, Finland;
- Received 21 May 2012
- Revised 27 August 2012
- Accepted 29 August 2012
- Published in print 1 February 2014.
- Published online 21 January 2014.
- Published first 18 July 2013.
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