Yokota, Isao http://orcid.org/0000-0001-6254-2225
Matsuyama, Yutaka
Article History
Received: 24 February 2018
Accepted: 7 February 2019
First Online: 14 February 2019
Ethics approval and consent to participate
: Not applicable because of developing of statistical method. Real example retrospective data were originally published in Oba M, et al. [CitationRef removed].
: Not applicable.
: The authors declare that they have no competing interests.
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