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Authors
Hamashima, Chisato https://orcid.org/0000-0003-2585-8479
Sano, Hiroshi
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Funding
Funding for this research was provided by:
National Cancer Center (29-A-16)
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Article History
Received: 26 October 2017
Accepted: 19 March 2018
First Online: 27 March 2018
Ethics approval and consent to participate
: This study used national databases which are indicated below.
: Not applicable.
: The authors declare that they have no competing interests.
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