Mattar, Omar M Efficacy and safety of tramadol in pain relief during diagnostic outpatient hysteroscopy: systematic review and meta-analysis of randomized controlled trials. [electronic resource] - Fertility and sterility 03 2019 - 547-552 p. digital Publication Type: Journal Article; Meta-Analysis; Systematic Review ISSN: 1556-5653 Standard No.: 10.1016/j.fertnstert.2018.10.026 doi Subjects--Topical Terms: AdultAmbulatory CareAnalgesics, Opioid--administration & dosageFemaleHumansHysteroscopy--adverse effectsMiddle AgedPain--diagnosisPain MeasurementRandomized Controlled Trials as TopicTime FactorsTramadol--administration & dosageTreatment OutcomeYoung Adult