Effect of an vitamin D deficiency on depressive symptoms in child and adolescent psychiatric patients - a randomized controlled trial: study protocol.
Manuel FöckerJochen AntelCorinna GrasemannDagmar FührerNina TimmesfeldDana ÖztürkTriinu PetersAnke HinneyJohannes HebebrandLars LibudaPublished in: BMC psychiatry (2018)
DRKS00009758, 16/06/2016 (retrospectively registered).