Received: 13 January 2021
Accepted: 28 May 2021
First Online: 12 July 2021
: At each center, ethical approval was given by an Institutional Review Board or and Independent Ethics Committee. All experimental protocols were approved by the Independent Ethics Committee of the Samsung Medical Centre, Seoul, South Korea on 16th August 2013. The study was performed in accordance with the Declaration of Helsinki, Good Clinical Practice, and local laws. Written informed consent was given by all patients.
: Not applicable.
: KP has received personal fees from Amgen, Astellas, AstraZeneca, Boehringer Ingelheim, Clovis, Daiichi Sankyo, Eli Lilly, Hanmi, Kyowa Hakko Kirin, Incyte, LOXO, Merck KGaA, Merck Sharp & Dohme, Ono, Novartis, and Roche; and research funding from AstraZeneca and Merck Sharp & Dohme. YCK reports grants from Boehringer Ingelheim and AstraZeneca, outside the submitted work. MK and AM are employees of Boehringer Ingelheim. JHK reports personal fees from Boehringer Ingelheim, grants from AstraZeneca, Ono, CKD, and Astellas, grants and personal fees from YooHan, and personal fees from Merck Sharp & Dohme outside the submitted work. All other authors declare that they have no competing interests.