Koo Denise, Felix Kaytura, Dankwa-Mullan Irene, Miller Therese, Waalen Jill
Scientific Education and Professional Development Program Office, Office of Surveillance, Epidemiology and Laboratory Services, CDC, Atlanta, Georgia 30333, USA.
Am J Prev Med. 2012 Jun;42(6 Suppl 2):S89-91. doi: 10.1016/j.amepre.2012.04.011.