title: In response.
authors.affiliation: Department of Anesthesiology, Stanford University School of Medicine, Palo Alto, California, bcarvalho@stanford.edu Department of Anesthesiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania Department of Anesthesiology, Royal Free Hospital, London, United Kingdom Department of Obstetrics and Gynecology, Stanford University School of Medicine, Palo Alto, California.
authors.forename: Alex
authors.initials: A
authors.lastname: Macario
authors.forename: Brendan
authors.initials: B
authors.lastname: Carvalho
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Tan
authors.forename: Pervez
authors.initials: P
authors.lastname: Sultan
authors.forename: Yasser Y
authors.initials: YY
authors.lastname: El-Sayed
mesh_terms: D015360:Analgesia, Epidural / Q000191:economics*; D001946:Breech Presentation / Q000191:economics*; D005260:Female; D006801:Humans; D011247:Pregnancy; D014710:Version, Fetal / Q000191:economics*