7.Meydani SM, , Barnett JB, Dallal ,GE, Fine BC, Jacques PF, Leka LD, and Hamer, DH. Serum zinc and pneumonia in nursing home elderly. American Journal of Clinical Nutrition. 2007: 86: 1167-1173. http://www.sciencedaily.com/releases/2007/10/071022120214.htm
8.AREDS Research Group. Associations of mortality with ocular disorders and an intervention of high-dose antioxidants and zinc in the Age-Related Eye Disease Study. AREDS Report No. 13. Arch Ophthalmol. 122:716-726, 2004. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1473208/?report=abstract
9.Hovdenak N, Haram K. Influence of mineral and vitamin supplements on pregnancy outcome. Eur J Obstet Gynecol Reprod Biol. 2012 Oct;164(2):127-32. http://www.ncbi.nlm.nih.gov/pubmed/22771225