Wang, Z
Gordon-Larsen, P
Siega-Riz, A M
Cai, J
Wang, H
Adair, L S
Popkin, B M
Article History
Received: 15 January 2016
Revised: 27 July 2016
Accepted: 17 August 2016
First Online: 28 September 2016
Competing interests
: The authors declare no conflict of interest.