Article History
Accepted: 11 January 2021
First Online: 23 January 2021
Declarations
:
: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
: Yosuke Yoshida, Masayuki Kaneko, and Mamoru Narukawa have no conflicts of interest that are directly relevant to the content of this study. Yosuke Yoshida is an employee of MSD K.K., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA.
: Not applicable.
: Not applicable.
: Not applicable.
: The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.
: All statistical analyses were performed using R software version 3.5.0 (ExternalRef removed).
: All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by YY and MK. The first draft of the manuscript was written by YY and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.