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Article History

Received: 24 April 2020

Accepted: 6 July 2020

First Online: 11 July 2020

Ethics approval and consent to participate

: In accordance with the law for clinical research in Japan, the protocol of this study was approved by the Nara Medical University Certified Review Board (Approval Number; nara0012). This study is conducted in compliance with the articles of the Declaration of Helsinki (revised in October 2013) and in accordance with the Ethical Guidelines for Medical and Health Research Involving Human Subjects established by the Ministry of Health, Labor, and Welfare in Japan. This study is also conducted in accordance with the law for clinical research in Japan (the Clinical Trials Act). In accordance with the Japanese Clinical Trials Act, this study is also registered in the Japan Registry of Clinical Trials (jRCTs051190080). The principal investigator or co-investigator will provide an explanation regarding the study to each eligible participant, using informed consent documents approved by the review board. Participants who give written informed consent will be registered in this study.

: All named authors take responsibility for the integrity of the work as a whole and have given their approval for this paper to be published.

: The funding of this protocol by the manufacturer of desmopressin is a competing interest.