Ren, Jiansong
Murphy, Gwen
Fan, Jinhu
Dawsey, Sanford M.
Taylor, Philip R.
Selhub, Jacob
Qiao, Youlin
Abnet, Christian C.
Article History
Received: 13 June 2016
Accepted: 8 September 2016
First Online: 17 October 2016
Competing interests
: The authors declare no competing financial interests.