L. GIERALTOWSKI, E. JULIAN, J. PRINGLE, K. MACDONALD, D. QUILLIAM, N. MARSDEN-HAUG, L. SAATHOFF-HUBER, D. VON STEIN, B. KISSLER, M. PARISH, D. ELDER, V. HOWARD-KING, J. BESSER, S. SODHA, A. LOHARIKAR, S. DALTON, I. WILLIAMS, C. BARTON BEHRAVESH
Epidemiol Infect. 2013 Jun; 141(6): 1244–1252. Published online 2012 Aug 30. doi: 10.1017/S0950268812001859