Name	Info	Provider	Link
Air Pollution	free resource	MedlinePlus Health Information	https://medlineplus.gov/airpollution.html
Full text from	free resource	Zurich Open Access Repository and Archive	https://doi.org/10.5167/uzh-18850
Full text from	free resource	CORE	https://core.ac.uk/reader/11259528?utm_source=linkout
Asthma	free resource	MedlinePlus Consumer Health Information	https://medlineplus.gov/asthma.html