Vitamin K DeficiencyVitamin K Deficiency BleedingVitamin KVitamin K 1Prothrombin TimeVitamin K 2HypoprothrombinemiasVitamin K 3ProthrombinElder Nutritional Physiological PhenomenaAntifibrinolytic AgentsBlood Coagulation TestsHemorrhagic DisordersPartial Thromboplastin TimeVitamin A1-Carboxyglutamic AcidVitaminsOsteocalcinIntracranial HemorrhagesVitamin B 12HemorrhageProtein PrecursorsPotassium DeficiencyVitamin DBlood Coagulation DisordersFolic AcidVitamin EVitamin K Epoxide ReductasesVitamin A DeficiencyInfant, NewbornFolate Receptors, GPI-AnchoredVitamin D DeficiencyFolic Acid DeficiencyVitamin B 12 DeficiencyPrimary PreventionBiological MarkersReduced Folate Carrier ProteinCathepsin KVitamin B 6Vitamin E DeficiencyFolate Receptor 1Carbon-Carbon LigasesDietary Supplements