title: Reply.
authors.affiliation: Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55902. Electronic address: rose.carl@mayo.edu.
authors.forename: Carl H
authors.initials: CH
authors.lastname: Rose
authors.affiliation: Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55902.
authors.forename: Arij
authors.initials: A
authors.lastname: Faksh
authors.affiliation: Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55902.
authors.forename: Kyle D
authors.initials: KD
authors.lastname: Traynor
authors.affiliation: Department of Emergency Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55902.
authors.forename: Daniel
authors.initials: D
authors.lastname: Cabrera
authors.affiliation: Department of Anesthesiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55902.
authors.forename: Katherine W
authors.initials: KW
authors.lastname: Arendt
authors.affiliation: Department of Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, NC 27157.
authors.forename: Brian C
authors.initials: BC
authors.lastname: Brost