PT - JOURNAL ARTICLE AU - Mattia Busana AU - Luigi Camporota AU - Luciano Gattinoni TI - Hypoxaemia in COVID-19: many pieces to a complex puzzle AID - 10.1183/16000617.0090-2022 DP - 2022 Jun 30 TA - European Respiratory Review PG - 220090 VI - 31 IP - 164 4099 - http://err.ersjournals.com/content/31/164/220090.short 4100 - http://err.ersjournals.com/content/31/164/220090.full SO - EUROPEAN RESPIRATORY REVIEW2022 Jun 30; 31