Critical Evaluation of the Effect of Valerian Extract on Sleep Structure and Sleep QualityFrank Donath, Ivar Roots, Ingo Fietze et al.|Pharmacopsychiatry|2000Cited by 207
Endothelin-1 Gene Variant Lys198Asn and Plasma Endothelin Level in Obstructive Sleep ApneaKonstanze Diefenbach, Ingo Fietze, Thomas Penzel et al.|Cardiology|2008Cited by 25
Effect of tolterodine on sleep structure modulated by CYP2D6 genotypeKonstanze Diefenbach, Ivar Roots, Katrin Jaeger et al.|Sleep Medicine|2007Cited by 23
Genetic polymorphisms in endothelin-receptor-subtype-a-gene as susceptibility factor for obstructive sleep apnea syndromeDana Buck, Ingo Fietze, Konstanze Diefenbach et al.|Sleep Medicine|2010Cited by 18
Identification of Twelve Polymorphisms in the Endothelin-1 Gene by Use of Fluorescently Labeled Oligonucleotides and PCR with Restriction Fragment Polymorphism AnalysisKonstanze Diefenbach, Ivar Roots, Reinhold Kerb et al.|Clinical Chemistry|2004Cited by 7