Evolution of Extensively Drug-Resistant Tuberculosis over Four Decades: Whole Genome Sequencing and Dating Analysis of Mycobacterium tuberculosis Isolates from KwaZulu-Natal. oleh Keira A Cohen, Thomas Abeel, Abigail Manson McGuire, Christopher A Desjardins, Vanisha Munsamy, Terrance P Shea, Bruce J Walker, Nonkqubela Bantubani, Deepak V Almeida, Lucia Alvarado, Sinéad B Chapman, Nomonde R Mvelase, Eamon Y Duffy, Michael G Fitzgerald, Pamla Govender, Sharvari Gujja, Susanna Hamilton, Clinton Howarth, Jeffrey D Larimer, Kashmeel Maharaj, Matthew D Pearson, Margaret E Priest, Qiandong Zeng, Nesri Padayatchi, Jacques Grosset, Sarah K Young, Jennifer Wortman, Koleka P Mlisana, Max R O'Donnell, Bruce W Birren, William R Bishai, Alexander S Pym, Ashlee M Earl