RT Journal Article SR Electronic T1 The use of digital web-based video training for correct inhalation technique during the COVID-19 pandemic JF ERJ Open Research JO erjor FD European Respiratory Society SP 00727-2022 DO 10.1183/23120541.00727-2022 A1 Maximilian Wollsching-Strobel A1 Uta Butt A1 Daniel Sebastian Majorski A1 Tim Mathes A1 Friederike Sophie Magnet A1 Doreen Kroppen A1 Melanie Patricia Berger A1 Sarah Bettina Schwarz A1 Wolfram Windisch YR 2023 UL http://openres.ersjournals.com/content/early/2023/02/16/23120541.00727-2022.abstract AB