Important changes in the timing of influenza epidemics in the WHO European Region over the past 20 years: virological surveillance 1996 to 2016
Caini, Saverio and Schellevis, François and El-Guerche Séblain, Clotilde and Paget, John, Eurosurveillance, 23, 17-00302 (2018), https://doi.org/10.2807/1560-7917.ES.2018.23.1.17-00302