Publication | Open Access

Effect on the incidence of pneumonia of vitamin D supplementation by quarterly bolus dose to infants in Kabul: a randomised controlled superiority trial

Preventive MedicineSuperiority TrialQuarterly Bolus DoseInfant NutritionClinical EpidemiologyPediatricsPediatric Lung DiseaseChild NutritionVitamin D SupplementationPublic HealthMedicinePaediatric Medicine