title: How can we Challenge the Four-minute Rule?
authors.affiliation: Department of Obstetrics and Gynecology, Nara Medical University, 840, Shijo-Cho, Kashihara 6348521, Nara, Japan. Electronic address: naruse@naramed-u.ac.jp.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Naruse
mesh_terms: D006801:Humans; D012680:Sensitivity and Specificity; D013997:Time Factors