Lopez AD, Mathers CD, Ezzati M, Jamison DT, Murray CJ (2006. May). „Global and regional burden of disease and risk factors, 2001: systematic analysis of population health data”. Lancet367 (9524), 1747–57. o. DOI:10.1016/S0140-6736(06)68770-9. PMID16731270.
nih.gov
pubmed.ncbi.nlm.nih.gov
Lopez AD, Mathers CD, Ezzati M, Jamison DT, Murray CJ (2006. May). „Global and regional burden of disease and risk factors, 2001: systematic analysis of population health data”. Lancet367 (9524), 1747–57. o. DOI:10.1016/S0140-6736(06)68770-9. PMID16731270.