Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/6490133
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=34967850.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34967850/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34967850
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PTHrP-1
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/non-CPTAC-3619
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/jn/article-lookup/doi/10.1093/jn/nxab444