Antianaerobic antibiotic therapy promotes overgrowth of antibiotic-resistant, gram-negative bacilli and vancomycin-resistant enterococci in the stool of colonized patients - Bhalla, A; Pultz, N J; Ray, A J; Hoyen, C K; Eckstein, E C; Donskey, C J (Infect Control Hosp Epidemiol, 2003)