RT Journal Article SR Electronic T1 A Modified Conception of Phrenic Nerve Crush and Pneumoperitoneum Therapy JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 194 OP 199 DO 10.1136/thx.5.2.194 VO 5 IS 2 A1 Wallace Fox YR 1950 UL http://thorax.bmj.com/content/5/2/194.abstract AB