Borchardt Stephanie M, Ritger Kathleen A, Dworkin Mark S
Division of Infectious Diseases, Illinois Department of Public Health, 160 North LaSalle, 7th Floor South, Chicago, IL 60601, USA.
Infect Dis Clin North Am. 2006 Jun;20(2):213-25, vii-viii. doi: 10.1016/j.idc.2006.02.005.