↑ Global Burden of Disease Study 2013 Collaborators (22 August 2015)։ «Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013.»։ Lancet 386 (9995): 743–800։ PMC 4561509։ PMID 26063472։ doi:10.1016/s0140-6736(15)60692-4