Funding for this research was provided by:
National Evidence-based Healthcare Collaborating Agency (NA-2013-007)
Received: 10 July 2017
Accepted: 30 January 2018
First Online: 12 February 2018
Ethics approval and consent to participate
: Ethics approval for the study design was obtained from the Institutional Ethics Review Committee of the National Evidence-based Healthcare Collaborating Agency in South Korea. Consent to participate was not needed, since this manuscript does not involve any animal or human data or tissue.
: Not applicable.
: YKS reports grants from Pfizer and Eisai. SHO, DK, YEL, DYK, YKL, JHL, SCB, YYC, JHP, JA declare that they have no competing interests.
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