Smedowski, Adrian
Liu, Xiaonan
Pietrucha-Dutczak, Marita
Matuszek, Iwona
Varjosalo, Markku
Lewin-Kowalik, Joanna
Article History
Received: 20 November 2015
Accepted: 26 January 2016
First Online: 1 April 2016
Competing interests
: The authors declare no competing financial interests.