Almangush, Alhadi
Heikkinen, Ilkka
Mäkitie, Antti A
Coletta, Ricardo D
Läärä, Esa
Leivo, Ilmo
Salo, Tuula
Article History
Received: 18 December 2016
Revised: 2 May 2017
Accepted: 3 July 2017
First Online: 27 July 2017
Competing interests
: The authors declare no conflict of interest.