title: Burden of proof.
authors: Richard M
authors: RM
authors: Smiley
mesh_terms: D000328:Adult; D000773:Anesthesia, Obstetrical / Q000009:adverse effects*; D000775:Anesthesia, Spinal / Q000009:adverse effects*; D002585:Cesarean Section; D004809:Ephedrine / Q000009:adverse effects / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007022:Hypotension / Q000139:chemically induced* / Q000517:prevention & control; D007231:Infant, Newborn; D010656:Phenylephrine / Q000009:adverse effects / Q000627:therapeutic use; D011247:Pregnancy; D014662:Vasoconstrictor Agents / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D014662:Vasoconstrictor Agents; D010656:Phenylephrine; D004809:Ephedrine