. . . . . . . . . . . . . . . "Public health challenges in our nation's capital hearing before the Oversight of Government Management, the Federal Workforce, and the District of Columbia Subcommittee of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Eleventh Congress, first session, May 19, 2009"@en . . "Public health challenges in our nation's capital : hearing before the Oversight of Government Management, the Federal Workforce, and the District of Columbia Subcommittee of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Eleventh Congress, first session, May 19, 2009"@en . . . . .