^○Kiyono Osanai¹, Akihiko Misawa¹, Sho Otsubo¹, Miyazaki Noriko¹, Inoue Yoshiko¹, Kimura Eizo¹, Kobayashi Yoichi², Suzuki Atsushi¹ (1.Kosei hospital, Japan, 2.Kyorin university, Japan)

^○Mitsuru Toeda, Tomonori Hada, Kunitoshi Kinjo, Kota Sakakibara, Satoki Senba, Michiru Yasui, Yoshifumi Ochi, Kei Kato, Kyoko Shimada, Yasunori Yoshino, Mari Sawada, Kiyoshi Kanno, Shintaro Sakate, Shiori Yanai, Masaaki Andou (Department of Obstetrics and Gynecology, Kurashiki Medical Center, Japan)

^○Yasuhiro Yamamoto¹, Yumi Haruna², Sumiko Tanikawa¹, Runa Ito¹, Eiko Tamaki¹, Motomu Ando¹ (1.Department of obstetrics and gynecology, Kugayama hospital, Japan, 2.Department of obstetrics and gynecology, Kyorin University, Japan)

^○Prio Wibisono¹, Christofani Ekapatria^2,3 (1.Faculty of Medicine, Pelita Harapan University, Indonesia, 2.Department of Obstetric and Gynecology, Indonesia, 3.Siloam Fertility and Minimal Invasive Center, Indonesia)

^○Takaki Ishizuka^1,2, Kensuke Saito¹, Daisuke Nakajima¹, Hitomi Aoki¹, Tomoko Sho¹, Kazuaki Yoshimura¹ (1.Department of Obstetrics and Gynecology, Wakamatsu Hospital of the University of Occupational and Environmental Health, Japan, 2.Department of Obstetrics and Gynecology, Okinawa Chubu Hospital, Okinawa, Japan)

^○Eva, Chung-Hui Wei (Department of OBGYN, Chi-Mei Medical Center, Liouying, Taiwan)

^○Ai Suizu, Shuichiro Iwami, Marisa Maeda (Department of Obstetrics and Gynecology, Kyoto Katsura Hospital, Japan)

^○Angelica Anne Acedillo Chua^1,2,3, Jennifer Abrenica Aranzamendez^1,2 (1.Quirino Memorial Medical Center, 2.St Luke's Medical Center Global City, 3.St Luke's Medical Center Quezon City, Philippines)

^○Pei-Chen Li¹, Dah-Ching Ding^1,2 (1.Department of Obstetrics and Gynecology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Foundation, and Tzu Chi University, Hualien, Taiwan, 2.Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan)

^○Siwaporn Siripenpong (Department of Obstetrics and Gynecology/Venerable Thawisak Jutindharo hospital, Thailand)