Before revision: In operation since September 2006, and created by John Brownstein, PhD and Clark Freifeld, MS , HealthMap acquires data from a variety of freely available electronic media sources (e.g.
After revision: In operation since September 2006, and created by John Brownstein, PhD and Clark Freifeld, PhD , HealthMap acquires data from a variety of freely available electronic media sources (e.g.