title: Comment on: How do we interpret an elevated carbohydrate antigen 19-9 level in asymptomatic subjects?
authors: E
authors: E
authors: Waanders
authors: L
authors: L
authors: van Keimpema
authors: J P H
authors: JP
authors: Drenth
mesh_terms: D001661:Biliary Tract Neoplasms / Q000097:blood; D015415:Biomarkers / Q000097:blood; D018395:CA-19-9 Antigen / Q000097:blood*; D006801:Humans; D017044:Polycystic Kidney, Autosomal Recessive / Q000097:blood*
chemical_list: D015415:Biomarkers; D018395:CA-19-9 Antigen