Burki, A.M. et al. 2018. COMPARISON OF CLINICAL EFFICACY OF RIGHT VERSUS LEFT SIDED DOUBLE LUMEN ENDOBRONCHIAL TUBE IN CONJUNCTION WITH FIBEROPTIC BRONCHOSCOPE: Efficacy Of Right Versus Left Sided Double Lumen Endobronchial Tube. Pakistan Armed Forces Medical Journal. 68, 4 (Aug. 2018), 947–52.