[BMJ Publishing Group Ltd and British Thoracic Society British Thoracic Society Winter Meeting 2017, QEII Centre Broad Sanctuary Westminster London SW1P 3EE, 6 to 8 December 2017, Programme and Abstracts - ()] External influences on asthma - P203 A comparison of adverse events associated with licensed and unlicensed spacer use with non-extrafine beclometasone dipropionate treatment in a real-life patient population with asthma in the uk