Hawkins, J S
Stephenson, M
Powers, B
Wing, D A
Article History
Received: 14 June 2016
Revised: 9 November 2016
Accepted: 14 November 2016
First Online: 26 January 2017
Competing interests
: Dr Wing was the primary investigator for this multicenter consortium, which was funded Cytokine Pharmasciences (King of Prussia, PA). Cytokine Pharmasciences was purchased by Ferring Pharmaceuticals in 2012 and Dr Wing serves as a consultant for Ferring. Dr Powers was employed by Cytokine PharmaSciences and is a current consultant for Ferring. All other authors declare no conflicts of interest.