Global variation in bacterial strains that cause tuberculosis disease: a systematic review and meta-analysis oleh Kirsten E Wiens, Lauren P Woyczynski, Jorge R Ledesma, Jennifer M Ross, Roberto Zenteno-Cuevas, Amador Goodridge, Irfan Ullah, Barun Mathema, Joel Fleury Djoba Siawaya, Molly H Biehl, Sarah E Ray, Natalia V Bhattacharjee, Nathaniel J Henry, Robert C Reiner, Hmwe H Kyu, Christopher J L Murray, Simon I Hay