RT Journal Article SR Electronic T1 Pulmonary Alveolar Microlithiasis JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 76 OP 81 DO 10.1136/thx.14.1.76 VO 14 IS 1 A1 Thomson, W. B. YR 1959 UL http://thorax.bmj.com/content/14/1/76.abstract AB