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Sleep improving effects of a single dose administration of a valerian/hops fluid extract. A double blind, randomized, placebo-controlled sleep-EEG study in a parallel design using the electrohypnogram

W Dimpfel 1, AA Suter 2
  • 1Justus-Liebig-University Gießen, c/o NeuroCode AG, Sportparkstr. 9, 35578 Wetzlar, Germany
  • 2Bioforce AG, Roggwil, Switzerland