Trend analysis suggested a change in subspecies among Mycobacterium avium isolated from pigs in Belgium, 1967?2013, Soetaert, Karine, Vluggen C., Duytschaever L, Denoël J., Roupie Virginie, Smeets F., Bruffaerts Nicolas, Huygen K., Fretin David, Diels M., et al. , Veterinary Record, Jun-05-2017, Volume 180, Issue 18, (2017)