title: Mathematical formulae for assessing the depth of the epidural space in children.
authors.forename: M
authors.initials: M
authors.lastname: Yamashita
mesh_terms: D000767:Anesthesia, Epidural / Q000379:methods*; D002648:Child; D004824:Epidural Space / Q000033:anatomy & histology*; D006801:Humans; D008433:Mathematics; D008954:Models, Biological