RT Journal Article SR Electronic T1 Virus Antibody Studies in Exacerbations of Chronic Bronchitis JF The Journal of the College of General Practitioners JO J Coll Gen Pract FD British Journal of General Practice SP 45 OP 47 VO 9 IS 1 A1 E. A. Murray YR 1965 UL http://bjgp.org/content/9/1/45.abstract AB