ERJ Open Research ERJ Open Research, European Respiratory Society, 2021, 7 (2), pp.00437-2020. ⟨10.1183/23120541.00437-2020⟩ ERJ Open Research, Vol 7, Iss 2 (2021) ERJ Open Research, 2021, 7 (2), pp.00437-2020. ⟨10.1183/23120541.00437-2020⟩ article-version (VoR) Version of Record