Vitamin K DeficiencyVitamin KVitamin K Deficiency BleedingVitamin K 1Vitamin K 2Prothrombin TimeHypoprothrombinemiasVitamin K 3ProthrombinDietElder Nutritional Physiological PhenomenaAntifibrinolytic AgentsVitamin AVitamin EVitaminsBlood Coagulation TestsHemorrhagic DisordersPartial Thromboplastin TimeVitamin D1-Carboxyglutamic AcidVitamin A DeficiencyOsteocalcinVitamin E DeficiencyIntracranial HemorrhagesDietary SupplementsHemorrhagePotassium DeficiencyProtein PrecursorsBlood Coagulation DisordersVitamin D DeficiencyVitamin K Epoxide ReductasesVitamin B 12Ascorbic AcidInfant, NewbornDietary FatsVitamin B 6Vitamin B 12 DeficiencyVitamin B 6 DeficiencyBiological MarkersPrimary PreventionCholecalciferolPyridoxineCathepsin Kalpha-Tocopherol