title: Epidural analgesia in parturients with ankylosing spondylitis: a role for ultrasound surveillance and ultrasound-guided placement.
authors.forename: Himat
authors.initials: H
authors.lastname: Vaghadia
authors.forename: Geneviève
authors.initials: G
authors.lastname: Germain
authors.forename: Raymond
authors.initials: R
authors.lastname: Tang
mesh_terms: D015360:Analgesia, Epidural / Q000379:methods*; D016362:Analgesia, Obstetrical / Q000379:methods*; D000775:Anesthesia, Spinal / Q000379:methods*; D005260:Female; D006801:Humans; D011247:Pregnancy; D013167:Spondylitis, Ankylosing / Q000150:complications*