A. A. Alsultan, E. Aboulmagd, and T. T. Amin, “ESBL-producing E. coli and K. pneumoniae in Al-Ahsa, Saudi Arabia: antibiotic susceptibility and prevalence of blaSHV and blaTEM”, J Infect Dev Ctries, vol. 7, no. 12, pp. 1016–1019, Dec. 2013.