title: Drug resistant tuberculosis: Challenges of urbanization.
authors.affiliation: Department of Pathology and Microbiology, Aga Khan University, Karachi, Pakistan. Electronic address: rumina.hasan@aku.edu.
authors.forename: Rumina
authors.initials: R
authors.lastname: Hasan
keywords: Drug resistant tuberculosis; MDR-TB; Tuberculosis; Urbanization; XDR-TB