No abstract is available for this article. Supporting Information Filename Description tjp70264-supp-0001-PeerReview.pdf162.5 KB Peer Review History References , , , , , , & (2002). Ambulatory oxygen improves quality of life of COPD patients: A randomised controlled study. European Respiratory Journal, 20(2), 306–312. , , , , , , & (2018). Exercise Intolerance in Heart Failure With Preserved Ejection Fraction: Diagnosing and Ranking Its Causes Using Personalized O2 Pathway Analysis.