title: Respiratory depression following epidural morphine.
mesh_terms: D000767:Anesthesia, Epidural; D003864:Depression, Chemical; D006801:Humans; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000009:adverse effects*; D012119:Respiration / Q000187:drug effects*
chemical_list: D009020:Morphine