Funding for this research was provided by:
The Ministry of Education, Culture, Sports, Science, and Technology, and the Ministry of Health and Welfare of Japan (KAKENHI 20790398)
Smoking Research Foundation
Mochida Memorial Foundation for Medical and Pharmaceutical Research
Takeda Science Foundation
Article History
Received: 20 May 2019
Accepted: 18 November 2019
First Online: 6 December 2019
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.