title: Validating sampling methods for measurement of circulating matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1.
authors.forename: Ru-Yuan
authors.initials: RY
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Cui
authors.forename: Kai-Jun
authors.initials: KJ
authors.lastname: Zhao
authors.forename: Yao-Qing
authors.initials: YQ
authors.lastname: Tang
authors.forename: Lei
authors.initials: L
authors.lastname: Li
mesh_terms: D014408:Biomarkers, Tumor / Q000097:blood; D001800:Blood Specimen Collection / Q000379:methods; D006801:Humans; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D010190:Pancreatic Neoplasms / Q000097:blood* / Q000175:diagnosis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000097:blood*
chemical_list: D014408:Biomarkers, Tumor; D019715:Tissue Inhibitor of Metalloproteinase-1; D020780:Matrix Metalloproteinase 9