RT Journal Article SR Electronic T1 Experience with Mediastinoscopy JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 211 OP 213 DO 10.1136/thx.20.3.211 VO 20 IS 3 A1 P. J. Van Der Schaar A1 M. E. Van Zanten YR 1965 UL http://thorax.bmj.com/content/20/3/211.abstract AB