RT Journal Article SR Electronic T1 Primary immunity deficiency in adults. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 254 OP 255 DO 10.1136/thx.25.2.254-b VO 25 IS 2 A1 Citron, K M YR 1970 UL http://thorax.bmj.com/content/25/2/254.3.abstract AB