RT Journal Article SR Electronic T1 Bronchodilators: wrong for the lung in the long run? JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 403 OP 405 VO 43 IS 375 A1 van Schayck, C P YR 1993 UL http://bjgp.org/content/43/375/403.abstract AB