Name	Info	Provider	Link
Walking Problems	free resource	MedlinePlus Health Information	https://medlineplus.gov/walkingproblems.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31565538/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31565538
	free resource	Ubiquity Press	https://doi.org/10.7916/tohm.v0.684