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Lozano R, Naghavi M, Foreman K, Lim S, Shibuya K, Aboyans V, Abraham J, Adair T, Aggarwal R, et al. (15 december 2012). ”Global and regional mortality from 235 causes of death for 20 age groups in 1990 and 2010: a systematic analysis for the Global Burden of Disease Study 2010.”. Lancet 380 (9859): sid. 2095–128. doi:10.1016/S0140-6736(12)61728-0. PMID 23245604.