Li, Fengsheng
Freed, Daniel C.
Tang, Aimin
Rustandi, Richard R.
Troutman, Matthew C.
Espeseth, Amy S.
Zhang, Ningyan
An, Zhiqiang
McVoy, Michael
Zhu, Hua
Ha, Sha
Wang, Dai
Adler, Stuart P.
Fu, Tong-Ming http://orcid.org/0000-0003-1420-2271
Article History
Received: 17 August 2017
Revised: 21 October 2017
Accepted: 23 November 2017
First Online: 14 December 2017
Competing interests
: F.L., D.C.F., A.T., R.R.R., M.C.T, A.S.E., S.H., D.W., and T.-M. F. are employees of Merck & Co., Inc. and as such receiving salaries and benefits from the company.