TY - JOUR AU - Thiem, Ursula AU - Kállay, Enikö AU - Borchhardt, Kyra PY - 2012 TI - Is quarterly bolus vitamin D 3 supplementation adequate to prevent childhood pneumonia? JF - Translational Pediatrics; Vol 1, No 2 (October 08, 2012): Translational Pediatrics Y2 - 2012 KW - N2 - Already in 1922, based on the observation of 64 malnourished Viennese infants, Chick and colleagues postulated a factor present in both cod-liver oil and sunlight that is able to cure rickets ( 1 ). This factor later turned out to be vitamin D. Today, it is evident that the actions of the active vitamin D metabolite, i.e. 1,25-dihydroxyvitamin D3 (calcitriol), go far beyond bone health, including diverse actions on the immune system as recently reviewed ( 2 ). UR - https://tp.amegroups.org/article/view/663