Kallel H, Mahjoubi F, Dammak H, Bahloul M, Hamida CB, Chelly H, Rekik N, Hammami A, Bouaziz M. Correlation between antibiotic use and changes in susceptibility patterns of Pseudomonas aeruginosa in a medical-surgical intensive care unit. Indian J Crit Care Med 2008; 12 (1):18-23.