Name	Info	Provider	Link
Menstruation	free resource	MedlinePlus Health Information	https://medlineplus.gov/menstruation.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34758460/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34758460
	subscription/membership/fee required	Sheridan PubFactory	https://journals.humankinetics.com/doi/10.1123/ijspp.2021-0005