Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33793936/
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PTHrP-1
	free resource	scite Smart Citations	https://scite.ai/reports/33793936
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/plphys/article-lookup/doi/10.1093/plphys/kiab008