title: The efficacy of oral vs. IM meperidine.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D006801:Humans; D007279:Injections, Subcutaneous; D008614:Meperidine / Q000008:administration & dosage*; D010146:Pain / Q000188:drug therapy*
chemical_list: D008614:Meperidine