Funding for this research was provided by:
Janssen Korea Ltd (RRA-17716)
Received: 26 June 2019
Accepted: 25 March 2020
First Online: 6 April 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee, the Institutional Review Board (IRB) of Seoul National University Hospital and the Seoul National University College of Medicine (IRB number: 1611–056-807). As no personal information was collected, no consent was required.
: Not applicable.
: Gum Jee Choi, Min-kyung Koh were staff members of the Janssen company from the planning stage of the study, therefore there is a conflict of interest for them. Although not related to this study, YM Ahn receives research support from or has served as a speaker for Janssen Korea Ltd., Lundbeck Korea Co., Ltd., and Korea Otsuka Pharmaceutical.