¹ http://www.mayoclinic.org/diseases-conditions/mrsa/basics/definition/con-20024479
² E. Rojas and L. Liu, “Estimating the annual hospital excess cost of methicillin-resistant Staphylococcus aureus infections in the United States,” presented at International Society for Pharmacoeconomics and Outcomes Research (IPSOR) Tenth Annual International Meeting, Washington, DC, May 2005.