Asthma control with extrafine‐particle hydrofluoroalkane–beclometasone vs. large‐particle chlorofluorocarbon–beclometasone: a real‐world observational study
Asthma control with extrafine‐particle hydrofluoroalkane–beclometasone vs. large‐particle chlorofluorocarbon–beclometasone: a real‐world observational study