Surveillance of antibiotic susceptibility patterns among Shigella sonnei strains isolated in Belgium during the 18-year period 1990 to 2007., Vrints, M, Mairiaux Eric, Van Meervenne E, Collard J-M, and Bertrand Sophie , J Clin Microbiol, 2009 May, Volume 47, Issue 5, p.1379-85, (2009)