1. World Health Organization 2014. Global leprosy update, 2013; reducing disease burden. 5 September 2014, 89th year/5 Septembre 2014, 89e année. No. 36, 2014, 89, 389-400. Available at: http://www.who.int/wer.
2. NLEP 2014. NLEP—Progress Report for the year 2013–14. Central Leprosy Division Directorate General of Health Services Nirman Bhawan, New Delhi 110011. Available at: http://www.nlep.nic.in/pdf/Progress%20report%2031st%20March%202013-14.pdf.
3. Sulphone resistance in leprosy. An experimental and clinical study;Pettit;Lancet,1964
4. Identification of primary drug resistance to rifampin in Mycobacterium leprae strains from leprosy patients in Amazonas State;Contreras;Brazil. J Clin Microbiol,2014
5. Drug resistance patterns in Mycobacterium leprae isolates from relapsed leprosy patients attending The Leprosy Mission (TLM) Hospitals in India;Lavania;Lepr Rev,2014