Williams SE, Pahud BA, Vellozzi C, Donofrio PD, Dekker CL, Halsey N, Klein NP, Baxter RP, Marchant CD, Larussa PS, Barnett ED, Tokars JI, McGeeney BE, Sparks RC, Aukes LL, Jakob K, Coronel S, Sejvar JJ, Slade BA, Edwards KM. Causality assessment of serious neurologic adverse events following 2009 H1N1 vaccination. Vaccine. 2011 Oct 26; 29(46):8302-8.