Attard, S M
Herring, A H
Wang, H
Howard, A-G
Thompson, A L
Adair, L S
Mayer-Davis, E J
Gordon-Larsen, P http://orcid.org/0000-0001-5322-4188
Article History
Received: 9 September 2014
Revised: 21 January 2015
Accepted: 29 April 2015
First Online: 22 June 2015
Competing interests
: The authors declare no conflict of interest.