Funding for this research was provided by:
Korea Health Industry Development Institute (HI14C1277)
Received: 29 January 2020
Accepted: 9 June 2020
First Online: 27 July 2020
: Seock-Ah Im is a recipient of research funds from AstraZeneca Inc., Pfizer and Roche, has consultant and advisory roles for AstraZeneca, Amgen, Eisai, Hanmi Corp, Lilly, MediPacto, Novartis, Pfizer, and Roche. The other authors declare no conflict of interest.