Kataya, Yuki
,
Murakami, Kentaro
Kobayashi, Satomi
Suga, Hitomi
Sasaki, Satoshi
Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology of Japan (15K16213)
Japan Society for the Promotion of Science (22240077)
Article History
Received: 14 February 2017
Accepted: 4 April 2017
First Online: 12 April 2017
Compliance with ethical standards
:
: YK contributed to the conceptualization of the study question, conducted the statistical analysis, and prepared the first draft of the manuscript; KM contributed to the concept and design of the survey, conceptualized the study question, interpreted the data, provided input into the final draft of the manuscript, and had primary responsibility for the final content of the manuscript; SK, HS, and SS contributed to the concept and design of the survey, coordination of the fieldwork, data collection, and management, and provided input into the final draft of the manuscript. All authors read and approved the final manuscript.
: This study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving human subjects were approved by the Ethics Committee of the University of Tokyo’s Faculty of Medicine. Written informed consent was obtained from each participant and also from a parent/guardian for participants aged <20 years.
: All authors declare that there was no conflict of interest.
: This work was supported in part by the Grants-in Aid for Young Scientists (B) (to KM, Grant Number 15K16213) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and the Grants-in-Aid for Scientific Research (A) (to SS, Grant number 22240077) from the Japan Society for the Promotion of Science. The Ministry of Education, Culture, Sports, Science and Technology of Japan and the Japan Society for the Promotion of Science had no role in the design, analysis, or writing of this article.