%0 Journal Article %K Antigens %K Humans %K Lepromin %K leprosy %K Skin Tests %B International journal of leprosy and other mycobacterial diseases : official organ of the International Leprosy Association %D 1966 %G eng %L RIDLEY1966 %N 3 %P 255-73 %T Classification of leprosy according to immunity. A five-group system. %U http://ila.ilsl.br/pdfs/v34n3a03.pdf %V 34 %1 http://www.ncbi.nlm.nih.gov/pubmed/5950347?dopt=Abstract %8 1966 Jul-Sep