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The authors are listed out of order. The correct author order and citation are:
Pierrick Bedouch, Mohsen Sadatsafavi, Carlo A. Marra, J. Mark FitzGerald, Larry D. Lynd
Bedouch P, Sadatsafavi M, Marra CA, FitzGerald JM, Lynd LD (2012) Trends in Asthma-Related Direct Medical Costs from 2002 to 2007 in British Columbia, Canada: A Population Based-Cohort Study. PLoS ONE 7(12): e50949. doi:10.1371/journal.pone.0050949
Competing Interests: No competing interests declared.
