RT Journal Article SR Electronic T1 The natural history of chronic bronchitis. JF The Journal of the College of General Practitioners JO J Coll Gen Pract FD British Journal of General Practice SP 8 OP 16 VO 11 IS Suppl 2 A1 W. W. Holland YR 1966 UL http://bjgp.org/content/11/Suppl_2/8.abstract AB