Pretreatment chest x-ray severity and its relation to bacterial burden in smear positive pulmonary tuberculosis द्वारा Murthy, SE, Chatterjee, F, Crook, A, Dawson, R, Mendel, C, Murphy, ME, Murray, SR, Nunn, AJ, Phillips, PPJ, Singh, KP, McHugh, TD, Gillespie, SH, REMoxTB Consortium