Standardisation and Evaluation of Direct MTT Rifampicin Tube Assay for Sputum against Smear Grading, Volume and Turnaround Time Journal title: Journal of Clinical and Diagnostic Research Authors: Pinaki Chattopadhyay, Pratibha Narang, Ujjwala Gaikwad, Rahul Narang, Deepak Kumar Mendiratta Subject(s):