Name	Info	Provider	Link
	free resource	J-STAGE, Japan Science and Technology Information Aggregator, Electronic	https://joi.jlc.jst.go.jp/JST.Journalarchive/internalmedicine1992/34.1030?from=PubMed
Pulmonary Hypertension	free resource	MedlinePlus Health Information	https://medlineplus.gov/pulmonaryhypertension.html