Investigation of an association between onset of narcolepsy and vaccination with pandemic influenza vaccine, Ireland April 2009-December 2010 O’Flanagan, D and Barret, A S and Foley, M and Cotter, S and Bonner, C and Crowe, C and Lynch, B and Sweeney, B and Johnson, H and McCoy, B and Purcell, E, Eurosurveillance, 19, 20789 (2014), https://doi.org/10.2807/1560-7917.ES2014.19.17.20789