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