Vitamin K DeficiencyVitamin K Deficiency BleedingVitamin KVitamin K 1Vitamin D DeficiencyVitamin A DeficiencyVitamin DProthrombin TimeVitamin K 2HypoprothrombinemiasVitamin K 3ProthrombinElder Nutritional Physiological PhenomenaAntifibrinolytic AgentsBlood Coagulation TestsHemorrhagic DisordersPartial Thromboplastin TimeVitamin A1-Carboxyglutamic AcidVitaminsOsteocalcinIntracranial HemorrhagesHemorrhageProtein PrecursorsPotassium DeficiencyBlood Coagulation DisordersVitamin EVitamin K Epoxide ReductasesVitamin B 12Infant, NewbornPrimary PreventionBiological MarkersCathepsin KVitamin B 12 DeficiencyVitamin E DeficiencyCarbon-Carbon Ligases