Golubic, R
,
Wijndaele, K
Sharp, S J
Simmons, R K
Griffin, S J
Wareham, N J
Ekelund, U
Brage, S
Article History
Received: 13 January 2014
Revised: 12 March 2014
Accepted: 2 April 2014
First Online: 15 April 2014
Competing interests
: The authors declare no conflict of interest.