title: Response to 'Letter to the Editor' by Wendy Hernandez-Fernandez et al.
authors.affiliation: Department of Obstetrics and Gynecology, Sanggye Paik Hospital, Inje University School of Medicine, Seoul, South Korea.
authors.forename: Sang-Hee
authors.initials: SH
authors.lastname: Yoon
authors.affiliation: Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, South Korea.
authors.forename: Soo-Nyung
authors.initials: SN
authors.lastname: Kim
authors.affiliation: Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, South Korea.
authors.forename: Seung-Hyuk
authors.initials: SH
authors.lastname: Shim
authors.affiliation: Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, South Korea.
authors.forename: Soon-Beum
authors.initials: SB
authors.lastname: Kang
authors.affiliation: Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, South Korea. Electronic address: lsj671121@gmail.com.
authors.forename: Sun-Joo
authors.initials: SJ
authors.lastname: Lee