title: Methodological weakness in using correlation coefficients for assessing the interchangeability of analyte data between samples collected under different sampling conditions--the example of matrix metalloproteinase 9 determined in serum and plasma samples.
authors.forename: Klaus
authors.initials: K
authors.lastname: Jung
authors.forename: Chun-Ying
authors.initials: CY
authors.lastname: Wu
mesh_terms: D002292:Carcinoma, Renal Cell / Q000201:enzymology; D003627:Data Interpretation, Statistical; D006801:Humans; D007680:Kidney Neoplasms / Q000201:enzymology; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D010949:Plasma / Q000201:enzymology*; D044967:Serum / Q000201:enzymology*; D013274:Stomach Neoplasms / Q000201:enzymology
chemical_list: D020780:Matrix Metalloproteinase 9