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Lessons learned from a double-blind randomised placebo-controlled study with a iota-carrageenan nasal spray as medical device in children with acute symptoms of common cold

Tamas Fazekas, Philipp Eickhoff, Nathalie Pruckner, Georg Vollnhofer, Gustav Fischmeister, Christopher Diakos, Margit Rauch, Maria Verdianz, Andreas Zoubek, Helmut Gadner and Thomas Lion*

BMC Complementary and Alternative Medicine 2012, 12:147  doi:10.1186/1472-6882-12-147