1. Harrison's principle of internal medicine;Longo,2012
2. Goldman L, Schafer AI .Goldman ís Cecil Medicine. Elsevierís Company: USA; 2 0 1.
3. Infection control and prevention: a review of hospital-acquired infections and the economic implications;Reed;Ochsner J.,2009
4. Hospital epidemiology and infection control in acute-care settings;Sydnor;Clin. Microbiol. Rev.,2011
5. Prevalence of hospital-acquired infection in a Moroccan university hospital;Jroundi;Am. J. Infect. Control,2007