RT Journal Article SR Electronic T1 Is asthma a risk factor for COVID-19? Are phenotypes important? JF ERJ Open Research JO erjor FD European Respiratory Society SP 00216-2020 DO 10.1183/23120541.00216-2020 VO 7 IS 1 A1 Xavier Muñoz A1 Florencia Pilia A1 Iñigo Ojanguren A1 Christian Romero-Mesones A1 María-Jesús Cruz YR 2021 UL http://openres.ersjournals.com/content/7/1/00216-2020.abstract AB