Nozawa, Shuhei
Urushihata, Kazuhisa http://orcid.org/0000-0002-6170-5130
Machida, Ryosuke
Hanaoka, Masayuki
Article History
Received: 10 September 2020
Accepted: 10 December 2020
First Online: 5 January 2021
Compliance with ethical standards
:
: For this study, we did not receive financial support from any organization.
: The study was approved by the research ethics committee of Shinshu University School of Medicine (Permission number: 4827). The study protocols were performed in accordance with the principles outlined in the Declaration of Helsinki of the World Medical Association.
: This study was conducted in accordance with the ethical principles described in the Declaration of Helsinki, the Japanese Ethical Guideline for Epidemiologic Research and all other applicable laws and regulations.