Determination of French influenza outbreaks periods between 1985 and 2011 through a web-based Delphi method. - Marion Debin; Cécile Souty; Clément Turbelin; Thierry Blanchon; Pierre-Yves Boëlle; Thomas Hanslik; Gilles Hejblum; Yann Le Strat; Flavien Quintus; Alessandra Falchi (BMC Medical Informatics Decis. Mak., 2013)