... significance between the pre-pandemic period of March 1, 2019, through February 29, 2020, and during the COVID ...
... -19 pandemic period of March 1, 2020, through February 28, 2021. This study will increase the ...
... al., 2020). Pulmonary arterial hypertension, WHO Group 1, (PAH) is a rare, chronic, progressive ...
... between March 1, 2019, to February 29, 2020, as a baseline need of medical services and compared it to the ...
... March 1, 2020 February 28, 2021, timeframe when the COVID-19 pandemic occurred. Understanding how ...