R. K. Tiwari, J. Haider, A. D. Shukla, and P. P. Gupta, “A study on pattern of initial and acquired drug resistance for isoniazid and rifampicin in A.F.B. positive sputum smears of pulmonary tuberculosis patients at a Medical College in North Eastern Uttar Pradesh, India”, Int J Basic Clin Pharmacol, vol. 7, no. 1, pp. 191–196, Dec. 2017.