Vitamin D status in Armenian women: a stratified cross-sectional cluster analysis in Armenia. Mean 25-OH D level among women aged 18–24 was 20 ± 8 ng/
mL; aged 25–64 was 21 ± 7 ng/
mL; and >65
COVID-19. Aetiology, pathogenesis, diagnosis and treatment and impaired
O 2 saturation, 80% of all cases), to severe (15% of cases,
O 2 saturation 89–93%) and extremely