Joung, K E
Burris, H H
Van Marter, L J
McElrath, T F
Michael, Z
Tabatabai, P
Litonjua, A A
Weiss, S T
Christou, H
Article History
Received: 29 January 2016
Revised: 24 May 2016
Accepted: 1 June 2016
First Online: 28 July 2016
Competing interests
: The authors declare no conflict of interest.