Outcomes of influenza A(H1N1)pdm09 virus infection: results from two international cohort studies. oleh Ruth Lynfield, Richard Davey, Dominic E Dwyer, Marcelo H Losso, Deborah Wentworth, Alessandro Cozzi-Lepri, Kathy Herman-Lamin, Grazyna Cholewinska, Daniel David, Stefan Kuetter, Zelalem Ternesgen, Timothy M Uyeki, H Clifford Lane, Jens Lundgren, James D Neaton, INSIGHT Influenza Study Group