title: Letter: Intravenous prostaglandin and the gallbladder.
mesh_terms: D002765:Cholecystography; D003287:Contrast Media; D005260:Female; D005704:Gallbladder / Q000187:drug effects*; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D011453:Prostaglandins / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D003287:Contrast Media; D011453:Prostaglandins