Vitamīns A http://summaries.cochrane.org/CD008524/vitamin-a-supplementation-for-preventing-disease-and-death-in-children-6-months-to-five-years-of-ageVitamīns D http://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2803%2914636-3/fulltexthttp://www.ncbi.nlm.nih.gov/sites/entrez?db=pubmed&cmd=Search&term=Pediatrics[Jour]+AND+111[Volume]+AND+908[page]
