Name	Info	Provider	Link
	free resource	BioMed Central	https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/1471-2393-12-63
Pain	free resource	MedlinePlus Health Information	https://medlineplus.gov/pain.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22748068/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/22748068