The European Project SIDARTHA using emergency care data for public health surveillance and health threat preparedness by Baer M, Vergeiner G, Kraemer A, Fischer M, Riesgo L Garcia-Castrillo, Krafft T, Ziemann A, Kurola J, Myrmel L, Kettunen T, Brattebø G, Lippert F, Ozguler A, Meulemans A, Gillet JB, Brand H, Pinheiro P, Rosenberg M, Overton J