PT - JOURNAL ARTICLE AU - Gurgen Harutyunyan AU - Varsenik Harutyunyan AU - Garnik Harutyunyan AU - Andrés Sánchez Gimeno AU - Artur Cherkezyan AU - Spartak Petrosyan AU - Anatoli Gnuni AU - Suren Soghomonyan TI - Ventilation/perfusion mismatch is not the sole reason for hypoxaemia in early stage COVID-19 patients AID - 10.1183/16000617.0277-2021 DP - 2022 Jun 30 TA - European Respiratory Review PG - 210277 VI - 31 IP - 164 4099 - http://err.ersjournals.com/content/31/164/210277.short 4100 - http://err.ersjournals.com/content/31/164/210277.full SO - EUROPEAN RESPIRATORY REVIEW2022 Jun 30; 31