Towards evidence-based vitamin D supplementation in infants: vitamin D intervention in infants (VIDI) - study design and methods of a randomised controlled double-blinded intervention study.
Otto M HelveHeli ViljakainenElisa Holmlund-SuilaJenni RosendahlHelena Hauta-AlusMaria Enlund-CerulloSaara ValkamaKati HeinonenKatri RäikkönenTimo HytinanttiOuti MäkitieSture AnderssonPublished in: BMC pediatrics (2017)
ClinicalTrials.gov, NCT01723852 , registration date 6.11.2012.