Li, Xiu-Liang The effects of preoperative single-dose thoracic paravertebral block on acute and chronic pain after thoracotomy: A randomized, controlled, double-blind trial. [electronic resource] - Medicine Jun 2018 - e11181 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1536-5964 Standard No.: 10.1097/MD.0000000000011181 doi Subjects--Topical Terms: AdultAgedAnesthetics, Intravenous--administration & dosageDouble-Blind MethodFemaleFollow-Up StudiesHumansMaleMiddle AgedNerve Block--adverse effectsPain MeasurementPain, Postoperative--drug therapyPreoperative Care--methodsSufentanil--administration & dosageThoracotomy--adverse effectsTreatment Outcome