TY - JOUR KW - Drug Resistance KW - Humans KW - leprosy KW - Sulfones AU - Crawford C L BT - Lancet (London, England) C1 - http://www.ncbi.nlm.nih.gov/pubmed/49828?dopt=Abstract DA - 1975 Aug 09 DO - 10.1016/s0140-6736(75)90995-2 IS - 7928 J2 - Lancet LA - eng PY - 1975 EP - 280 T2 - Lancet (London, England) TI - Letter: Sulphone resistance in leprosy. VL - 2 SN - 0140-6736 ER -