Wang, Zhen Semi-rigid thoracoscopy for undiagnosed exudative pleural effusions: a comparative study. [electronic resource] - Chinese medical journal Aug 2008 - 1384-9 p. digital Publication Type: Journal Article ISSN: 0366-6999 Subjects--Topical Terms: AdultAgedFemaleHumansMaleMiddle AgedPleural Effusion--diagnosisRetrospective StudiesThoracoscopy--adverse effects