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Adler, Rolf H; Herschkowitz, Norbert; Minder, Christoph E (2007). Letter to the editor : Homeopathic treatment of children with attention deficit disorder: a randomized, double blind, placebo-controlled crossover trial. H. Frei R. Everts, K.v. Ammon et al. Eur J Pediatr. 2005; 164: 758-767. European journal of pediatrics, 166(5), p. 509. Berlin: Springer-Verlag 10.1007/s00431-006-0262-5
