RT Journal Article SR Electronic T1 Short-acting betaagonists and asthma JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 518 OP 518 DO 10.3399/bjgp22X721001 VO 72 IS 724 A1 John Sharvill YR 2022 UL http://bjgp.org/content/72/724/518.2.abstract AB