Viral aetiology of influenza-like illness in Belgium during the influenza A(H1N1)2009 pandemic., Hombrouck, A, Sabbe Martine, Van Casteren Viviane, Wuillaume Françoise, Hue D, Reynders M, Gérard C, Brochier Bernard, Van Eldere J, Van Ranst M, et al. , Eur J Clin Microbiol Infect Dis, 2012 Jun, Volume 31, Issue 6, Number 1007, p.999-1007, (2012)