Dijkstra, M. H.
Pirinen, E.
Huusko, J.
Kivelä, R.
Schenkwein, D.
Alitalo, K.
Ylä-Herttuala, S.
Article History
Received: 9 June 2014
Accepted: 12 August 2014
First Online: 29 August 2014
Competing interests
: The authors declare no competing financial interests.