title: Thoracic ultrasonography versus chest radiography   for detection of pneumothoraces: challenges in   deriving and interpreting summary diagnostic   accuracy estimates. Authors' response.
authors.forename: Saadah
authors.initials: S
authors.lastname: Alrajab
authors.forename: Gloria
authors.initials: G
authors.lastname: Caldito
authors.forename: Asser M
authors.initials: AM
authors.lastname: Youssef
mesh_terms: D006801:Humans; D011030:Pneumothorax / Q000000981:diagnostic imaging*; D011859:Radiography; D014463:Ultrasonography