RT Journal Article SR Electronic T1 Is spirometry essential in diagnosing asthma? Yes JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 484 OP 484 DO 10.3399/bjgp16X686953 VO 66 IS 650 A1 Ingrid Looijmans–van den Akker A1 Hans van der Zeijden A1 Theo JM Verheij YR 2016 UL http://bjgp.org/content/66/650/484.abstract AB