unspecified valid from 2014-05-01
Received: 22 January 2014
Revised: 27 March 2014
Accepted: 7 April 2014
First Online: 6 May 2014
: ART has received research funding from GlaxoSmithKline. JRI reports a consultant/advisory role (uncompensated). ABS is a GlaxoSmithKline employee and stockholder. AD, MNS, SFJ, JB, MPK, KTL, and HABIII report no potential conflict of interest associated with this publication.