Brownstein, JohnMandl, KennethWolfe, Cecily J2013-01-292006Brownstein, John S., Kenneth D. Mandl, and Cecily J. Wolfe. 2006. Air travel and the spread of influenza: Authors' reply. PLoS Medicine 3(11): e502.1549-1277http://nrs.harvard.edu/urn-3:HUL.InstRepos:10236038en-USJournal Article2013-01-2910.1371/journal.pmed.0030502