Additional file 3.

Two-dimensional principal component analysis (PCA) score plots of urine samples (circle) and quality control (QC) samples (red cross) at weeks 1 to 12 in electrospray ionization (ESI) negative ion mode. Comp, component; t[1], component 1; t[2], component 2.

Format: DOC Size: 88KB Download file

This file can be viewed with: Microsoft Word Viewer

Wang et al. BMC Medicine 2013 11:86   doi:10.1186/1741-7015-11-86