@article {478, editor = {,}, title = {Proceedings of the Thoracic Society}, volume = {22}, number = {5}, pages = {478--482}, year = {1967}, doi = {10.1136/thx.22.5.478}, publisher = {BMJ Publishing Group Ltd}, issn = {0040-6376}, URL = {https://thorax.bmj.com/content/22/5/478}, eprint = {https://thorax.bmj.com/content/22/5/478.full.pdf}, journal = {Thorax} }