There is an error in Table 1. The column headings are incorrectly listed as "Question", "Yes" and "No". The column headings should be "Question", "Number" and "%". You will find an updated version of Table 1 below.
Citation: The PLOS ONE Staff (2014) Correction: A Systematic Review of Biomarkers for Disease Progression in Alzheimer's Disease. PLoS ONE 9(5): e97960. doi:10.1371/journal.pone.0097960
Published: May 15, 2014
Copyright: © 2014 The PLOS ONE Staff. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.