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Authors
Nakagawa, Koji https://orcid.org/0000-0003-0874-5894
Horikawa, Takashi
Orita, Yuji
Yamashiro, Emi
Watanabe, Hideaki
Shirai, Asako
Ogata, Souichi
Kataoka, Hisayo
Kuroda, Keiji
Takamizawa, Satoru
Sugiyama, Rikikazu
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Article History
Received: 30 December 2022
Accepted: 4 May 2023
First Online: 31 May 2023
Declarations
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: Koji Nakagawa, Takashi Horikawa, Yuji Orita, Emi Yamashiro, Hideaki Watanabe, Asako Shirai, Hisayo Kataoka, Keiji Kuroda, Satoru Takamizawa, Rikikazu Sugiyama declare that they have no conflicts of interest. Souichi Ogata in an employee of Vitrolife K.K.
: The study was conducted in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards, and it was reviewed and approved by the institutional review board of Sugiyama Clinic. All patients have received and signed an informed written consent form before entering the study, and they were also informed of an option to abort from the study at any time during the treatment.
