PhenprocoumonAcenocoumarol4-HydroxycoumarinsDrug Dosage CalculationsVitamin K Epoxide ReductasesInternational Normalized RatioAnticoagulantsPharmacogeneticsWarfarinPharmacovigilanceVitamin KAryl Hydrocarbon HydroxylasesDrug InteractionsThromboembolismMixed Function OxygenasesSteroid 16-alpha-Hydroxylase