Azad, Aftab Validity of ultrasonography to diagnosing pneumothorax: a critical appraisal of two meta-analyses. [electronic resource] - CJEM Mar 2015 - 199-201 p. digital Publication Type: Journal Article; Meta-Analysis; Review; Systematic Review ISSN: 1481-8043 Standard No.: 10.2310/8000.2014.140698 doi Subjects--Topical Terms: Diagnosis, DifferentialDiagnostic Imaging--standardsHumansPneumothorax--diagnostic imagingReproducibility of ResultsUltrasonography