Jamali, Sana, et al. “Evaluation of Modified petroff’s Method and Manual MGIT Culture System to Facilitate Detection of Acid-Fast Bacilli in Smear-Negative Presumptive Cases of Pulmonary Tuberculosis”. Indian Journal of Community Health, vol. 31, no. 2, June 2019, pp. 231-5, doi:10.47203/IJCH.2019.v31i02.013.