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Frei, Heiner; Everts, Regula; von Ammon, Klaus; Kaufmann, Franz; Walther, Daniel; Hsu, Shu-Fang; Collenberg, Marco; Fuhrer, Katharina; Hassink, Ralph; Steinlin, Maja; Thurneysen, André (2005). Homeopathic treatment of children with attention deficit hyperactivity disorder: a randomised, double blind, placebo controlled crossover trial. European journal of pediatrics, 164(12), pp. 758-767. Springer-Verlag 10.1007/s00431-005-1735-7
