«International Classification of Diseases (ICD)». www.who.int(engelsk). World Health Organization. Besøkt 30. oktober 2023. «For more than a century, the International Classification of Diseases (ICD) has been the basis for comparable statistics on causes of mortality and morbidity between places and over time. Originating in the 19th century, the latest version of the ICD, ICD-11, was adopted by the 72nd World Health Assembly in 2019 and came into effect on 1st January 2022.»
