“Association of Socio-Demographic Profile with Prevalence of Multi Drug Resistant Tuberculosis among Retreated Pulmonary Tuberculosis Patients in North India”, SAARC J. Tuber. Lung Dis. HIV/AIDS, vol. 16, no. 1, pp. 1–5, Jun. 2018, doi: 10.3126/saarctb.v16i1.23238.