%0 Journal Article %A Gurgen Harutyunyan %A Rosa Isabel Benítez Bermejo %A Varsenik Harutyunyan %A Garnik Harutyunyan %A Andrés Sánchez Gimeno %A Artur Cherkezyan %A Spartak Petrosyan %A Anatoli Gnuni %A Suren Soghomonyan %T Hypoxaemia in the early stage of COVID-19: prevalence of physical or biochemical factors? %D 2022 %R 10.1183/16000617.0138-2022 %J European Respiratory Review %P 220138 %V 31 %N 165 %U https://err.ersjournals.com/content/errev/31/165/220138.full.pdf