Tramadol for tension-type headache.
Robbins
Lawrence
L
D000701:Analgesics, Opioid / Q000009:adverse effects* / Q000627:therapeutic use; D006801:Humans; D012189:Retrospective Studies; D019966:Substance-Related Disorders / Q000209:etiology*; D018781:Tension-Type Headache / Q000188:drug therapy*; D014147:Tramadol / Q000009:adverse effects* / Q000627:therapeutic use
D000701:Analgesics, Opioid; D014147:Tramadol