Kumpulainen, S M
Heinonen, K
Salonen, M K
Andersson, S
Wolke, D
Kajantie, E
Eriksson, J G
Raikkonen, K
Article History
Received: 18 November 2015
Revised: 1 July 2016
Accepted: 5 July 2016
First Online: 15 August 2016
Competing interests
: The authors declare no conflict of interest.