RT Journal Article SR Electronic T1 Inherited deficiency of α1-antitrypsin and emphysema JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 671 OP 674 VO 56 IS 7 A1 Zakir H. Bengali YR 1989 UL http://www.ccjm.org/content/56/7/671.abstract AB