Chang Soju, Sievert Dawn M, Hageman Jeffrey C, Boulton Matthew L, Tenover Fred C, Downes Frances Pouch, Shah Sandip, Rudrik James T, Pupp Guy R, Brown William J, Cardo Denise, Fridkin Scott K
Epidemic Intelligence Service, Division of Applied Public Health Training, Epidemiology Program Office, Centers for Disease Control and Prevention, Atlanta 30333, USA.
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