Brana, I
Berger, R
Golan, T
Haluska, P
Edenfield, J
Fiorica, J
Stephenson, J
Martin, L P
Westin, S
Hanjani, P
Jones, M B
Almhanna, K
Wenham, R M
Sullivan, D M
Dalton, W S
Gunchenko, A
Cheng, J D
Siu, L L
Gray, J E
Article History
Received: 14 June 2014
Revised: 25 July 2014
Accepted: 18 August 2014
First Online: 7 October 2014
Competing interests
: MBJ and JDC are employees of Merck. AG was an employee of Merck when the study was conducted. PH, JF, and LLS had received research funding from Merck. The remaining authors declare no conflict of interest.