Arakaki, Tatsuya
Hasegawa, Junichi
Sekizawa, Akihiko
Ikeda, Tomoaki
Ishiwata, Isamu
Kinoshita, Katsuyuki
,
Ikeda, Tomoaki
Yoshida, Koyo
Ishiwata, Isamu
Sekizawa, Akihiko
Kuribayashi, Yasushi
Suzuki, Shunji
Ochiai, Kazuhiko
Kitai, Hirokatsu
Shimura, Kentaro
Kimura, Kaoru
Ishitani, Ken
Hasegawa, Junichi
Nagaishi, Masaji
Arakaki, Tatsuya
Ishikawa, Gen
Oka, Susumu
Samura, Osamu
Tanaka, Hiroaki
Ishikawa, Hiroshi
Kobayashi, Takao
Ohno, Yasumasa
Osada, Kayo
Kawana, Yukiko
Seki, Hiroyuki
Nakata, Masahiko
Hashii, Koji
Hayashi, Satoshi
Murakoshi, Takeshi
Kinoshita, Katsuyuki
Article History
Received: 12 January 2021
Accepted: 10 September 2021
First Online: 18 September 2021
Declarations
:
: This study was performed as an investigation of JAOG and approved by the ethics board of JAOG (No. 80, 1 July 12 2020). This investigation was conducted in accordance with the principles of the Declaration of Helsinki. Because this was a retrospective analysis based on a questionnaire survey, all patient records and data were anonymised by the institutions prior to submission for analyses and the need of informed consent was waived by the ethics board of Japan Association of Obstetricians and Gynecologists (JAOG).
: Not applicable.
: None to report.