Mycobacterium tuberculosis complex genetic diversity: mining the fourth international spoligotyping database (SpolDB4) for classification, population genetics and epidemiology36758, Brudey, K., Driscoll J.R., Rigouts L., Prodinger W.M., Gori A., Al-Hajoj S.A., Allix C., Aristimuno L., Arora J., Baumanis V., et al. , BMC.Microbiol., 0/0/2006, Volume 6, p.23, (2006)