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Brignoli, Reto; Kazemekaitis, Arturas; Linde, Klaus; Meier, Beat; Melzer, Jörg; Rostock, Matthias; Uehleke, Bernhard (2007). Matched-pair study showed higher quality of placebo-controlled trials in Western phytotherapy than conventional medicine. Forschende Komplementärmedizin, 14(5), pp. 308-15. Basel: Karger
