Yamakawa, Hideaki http://orcid.org/0000-0003-2480-6087
Takemura, Tamiko
Iwasawa, Tae
Yamanaka, Yumie
Ikeda, Satoshi
Sekine, Akimasa
Kitamura, Hideya
Baba, Tomohisa
Iso, Shinichiro
Okudela, Koji
Kuwano, Kazuyoshi
Ogura, Takashi
Article History
Received: 15 September 2017
Accepted: 22 January 2018
First Online: 30 January 2018
Ethics approval and consent to participate
: This retrospective cohort study was approved by the institutional review board of Kanagawa Cardiovascular and Respiratory Center (no. 28–11). The patients’ approval or informed consent was not required for a retrospective review of their records, pursuant to the ethical guidelines of the Japanese Ministry of Health, Labor, and Welfare.; however, the present retrospective study was carried out by the opt-out method of our hospital website.
: Not applicable.
: The authors declare that they have no competing interests.
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