RT Journal Article SR Electronic T1 Negative visual representation of chronic obstructive pulmonary disease occurs online JF ERJ Open Research JO erjor FD European Respiratory Society SP 00549-2020 DO 10.1183/23120541.00549-2020 VO 6 IS 4 A1 Freya Berenyi A1 Sara Booth A1 Anna Spathis A1 Natasha Smallwood YR 2020 UL http://openres.ersjournals.com/content/6/4/00549-2020.abstract AB