title: Pain q3h.
mesh_terms: D000328:Adult; D001416:Back Pain / Q000188:drug therapy / Q000523:psychology; D004993:Ethics, Nursing; D006801:Humans; D008297:Male; D008614:Meperidine / Q000627:therapeutic use*; D010148:Intractable Pain / Q000188:drug therapy* / Q000523:psychology*; D019966:Substance-Related Disorders / Q000517:prevention & control
chemical_list: D008614:Meperidine