Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/37314828/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/37314828
	free resource	Wiley	https://onlinelibrary.wiley.com/doi/10.1111/1759-7714.14996
	free resource	Biospecimen Research Database	https://brd.nci.nih.gov/brd/paper/thorac-cancer/2023/long-term-stability-of-pleural-fluid-carcinoembryonic-antigen/138655