RT Journal Article SR Electronic T1 Genetic predisposition to chronic obstructive pulmonary disease: advances in α1-antitrypsin deficiency and the serpinopathies JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 446 OP 447 DO 10.7861/clinmedicine.7-5-446 VO 7 IS 5 A1 David A Lomas YR 2007 UL http://www.rcpjournals.org/content/7/5/446.abstract AB