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subscription/membership/fee required Ingenta plc https://www.ingentaconnect.com/openurl?genre=article&issn=0003-4932&volume=275&issue=6&spage=1165&aulast=Pflüger
Pancreatic Cancer free resource MedlinePlus Health Information https://medlineplus.gov/pancreaticcancer.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33214420.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33214420/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/33214420
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/SLA.0000000000004427