Zhu, M
Tang, R
Doshi, S
Oliner, K S
Dubey, S
Jiang, Y
Donehower, R C
Iveson, T
Loh, E Y
Zhang, Y
Article History
Received: 4 September 2014
Revised: 17 November 2014
Accepted: 8 December 2014
First Online: 13 January 2015
Competing interests
: MZ, RT, S Doshi, KSO, YZ, S Dubey, YJ, EYL, and TI are employees of and stockholders in Amgen Inc. RCD has no conflict of interest to disclose.