Evaluation of Antimicrobial Susceptibility Patterns of Enterococci Isolated from Patients in Tehran University of Medical Sciences Teaching Hospitals - Jabalameli, Fereshteh; Emaneini, Mohammad; Shahsavan, Shadi; Sedaghat, Hossein; Abdolmaliki, Zohreh; Aligholi, Marzieh (Acta Medica Iranica)