title: Obtaining informed consent for clinical trials - seldom easy, often difficult, and sometimes impossible.
authors.forename: G M
authors.initials: GM
authors.lastname: Joynt
mesh_terms: D015360:Analgesia, Epidural / Q000009:adverse effects*; D016362:Analgesia, Obstetrical / Q000009:adverse effects*; D000775:Anesthesia, Spinal; D005260:Female; D006801:Humans; D051299:Post-Dural Puncture Headache / Q000517:prevention & control*; D011247:Pregnancy; D013129:Spinal Puncture / Q000009:adverse effects*