1. Trends in leprosy case detection worldwide since 1985
2. World Health Organization.2019. Geneva Switzerland.https://apps.who.int/iris/handle/10665/250119.
3. Incidence of nerve damage in leprosy patients treated with MDT;Solomon S;Int J Lepr Other Mycobact Dis,1998
4. An epidemiological survey of deformities and disabilities among 14,257 cases of leprosy in 11 counties;Zhang G;Lepr Rev,1993
5. Leprosy in Norway: an epidemiological study based on a national patient registry;Irgens LM;Lepr Rev,1980