TY - JOUR A1 - Brownstein, J.S. A1 - Wolfe, C.J. A1 - Mandl, K.D. T1 - Empirical evidence for the effect of airline travel on inter-regional influenza spread in the United States Y1 - 2006 DO - 10.1371/journal.pmed.0030401 VL - 3 IS - 10 ER -