A. Mandal, M. Basu, P. Das, S. Mukherjee, S. Das, and N. Roy, “Magnitude and reasons of initial default among new sputum positive cases of pulmonary tuberculosis under RNTCP in a district of West Bengal, India”, SE Asia J. Pub. Health, vol. 4, no. 1, pp. 41–47, Feb. 2015.