Inhaled Nitric Oxide in a PAH patient with COVID-19
https://pubmed.ncbi.nlm.nih.gov/32369396/

emPHasis-10 Predicts Mortality in PAH Patients 
https://erj.ersjournals.com/content/52/suppl_62/OA273

PaCO2 and Risk in Pulmonary Arterial Hypertension 
https://www.sciencedirect.com/science/article/abs/pii/S0167527320334471

Urban-Rural Disparities in PAH
https://www.atsjournals.org/doi/pdf/10.1513/AnnalsATS.202003-234RL