Reference 27 is omitted from the last sentence of the second last paragraph of the Methods section. The sentence should read: In addition, as a supplementary analysis, we made these comparisons for estimates from two models reported by Lazer et al., who developed regression models to improve upon GFT estimates [14, 27].
The reference is: Lazer D, Kennedy R, King G, Vespignani A (2014) Replication data for: The parable of Google Flu: Traps in big data analysis. Available: http://dx.doi.org/10.7910/DVN/24823 UNF:5:BJh9WzZQNEeSEpV3EWs+xg== IQSS Dataverse Network [Distributor] V1 [Version].
S2 Table. Comparing estimates of the weekly percentage of physician visits related to influenza-like illness (ILI) based on Google Flu Trends (GFT) to values reported by the Centers for Disease Control and Prevention (CDC), United States, October 2010-July 2013.
Citation: Martin LJ, Xu B, Yasui Y (2015) Correction: Improving Google Flu Trends Estimates for the United States through Transformation. PLoS ONE10(4): e0122939. https://doi.org/10.1371/journal.pone.0122939
Published: April 21, 2015
Copyright: © 2015 Martin et al. 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