AP

Alicia Puglionesi

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Physician S. Weir MItchell, 1909. (Credit: The Library of Congress)

Silas Weir Mitchell specialized in the ghostly pain that lingered after amputations.

Grady Memorial Hospital in Atlanta, where many patients are forced to wait for treatment in the hallways due to lack of space and over crowding in the emergency room, 2006.

How emergency rooms became the only place in America where patients had a right to free treatment.