Shirali, M
Pong-Wong, R
Navarro, P http://orcid.org/0000-0001-5576-8584
Knott, S
Hayward, C
Vitart, V
Rudan, I http://orcid.org/0000-0001-6993-6884
Campbell, H
Hastie, N D
Wright, A F
Haley, C S
Article History
Received: 13 May 2015
Revised: 23 October 2015
Accepted: 26 October 2015
First Online: 23 December 2015
Competing interests
: The authors declare no conflict of interest.