Kobayashi, Takao
Sugiura, Kazuko
Ojima, Toshiyuki
Serizawa, Mariko
Hirai, Kyuya
Morishita, Eriko
Article History
Received: 8 October 2023
Accepted: 4 January 2024
First Online: 8 February 2024
Declarations
:
: The national surveillance of pregnant women with hereditary thrombophilia was approved by the Ethics Committee of Kanazawa University (approval number 890–1) and Hamamatsu Medical Center (rapid approval number 78, 2018). The comparison observational study was approved by the Ethics Committee of Kanazawa University (approval number 1210–1) and Hamamatsu Medical Center (approval number 2021–3-095) and the Ethics Committee of the JSOG (approval number 131). This study was performed in compliance with the Declaration of Helsinki. Consent was not obtained, but all presented data were anonymized and there is no risk of individual identification. Although the ethics committees decided that informed consent was not required due to the retrospective nature of the study, we adopted the opt-out method.
: Not applicable.
: The authors declare no competing interests.