"Global, regional, and national age–sex specific all-cause and cause-specific mortality for 240 causes of death, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013". Lancet385: 117–71. 17 de decembro de 2014. PMID25530442. doi:10.1016/S0140-6736(14)61682-2.
"Global, regional, and national age–sex specific all-cause and cause-specific mortality for 240 causes of death, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013". Lancet385: 117–71. 17 de decembro de 2014. PMID25530442. doi:10.1016/S0140-6736(14)61682-2.