We thank the participants of the study.
This work was supported by Johnson & Johnson Japan. Johnson & Johnson Japan also provided funding for the journal’s article processing charges and editorial assistance. All authors had full access to all of the data in this study and take complete responsibility for the integrity of the data and accuracy of the data analysis.
We thank Mr. Yuichiro Tomita and Ms. Erika Matsui for their excellent technical assistance. We also thank Edanz Group (www.edanzediting.com/ac) for editing a draft of this manuscript. This editorial support was funded by Johnson & Johnson Japan.
All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.
Tsuyoshi Okura participated in the design of the study and performed the statistical analysis. Kei Teramoto, Rie Koshitani, and Yohei Fujioka collected the data. Yusuke Endo, Masaru Ueki, Masahiko Kato, Shin-ichi Taniguchi, Hiroshi Kondo, and Kazuhiro Yamamoto conceived the study, participated in its design and coordination, and helped draft the manuscript. All authors read and approved the final manuscript.
Tsuyoshi Okura, Kei Teramoto, Rie Koshitani, Yohei Fujioka, Yusuke Endo, Masaru Ueki, Masahiko Kato, Shin-ichi Taniguchi, Hiroshi Kondo, and Kazuhiro Yamamoto have nothing to declare.
Compliance with Ethics Guidelines
This study was conducted in accordance with the ethical standards of our institutional research committee and with the 1964 Declaration of Helsinki and its later amendments. Informed consent was obtained from all individual participants included in the study by the opt-out method.
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request. This manuscript includes all the available data in this study.
This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.