RT Journal Article SR Electronic T1 Public health leaders using social media to convey emergencies: New tools a boon JF The Nation's Health JO Nations Health FD American Public Health Association SP 1 OP 10 VO 39 IS 6 A1 Donya Currie YR 2009 UL http://www.thenationshealth.org/content/39/6/1.2.abstract AB