Smits, Dins http://orcid.org/0000-0001-5514-7374
Brigis, Girts
Pavare, Jana
Maurina, Baiba
Barengo, Noël Christopher
Article History
Received: 8 March 2017
Revised: 22 May 2017
Accepted: 30 May 2017
First Online: 20 June 2017
Competing interests
: The authors declare no competing financial interests.