Multicenter survey of routine determinations of resistance of Helicobacter pylori to antimicrobials over the last 20 years (1990 to 2009) in Belgium36563, Deyi, V.Y. Miendje, Bontems P., Vanderpas Jean, De Koster E., Ntounda R., Van den Borre C., Cadranel S., and Burette A. , J.Clin.Microbiol., 0/6/2011, Volume 49, Issue 6, Number 2209, p.2200 - 2209, (2011)