Co-anchors Robin Roberts (left) and George Stephanopoulos appear on ABC's "Good Morning America" on Wednesday, Feb. 20, 2013, in New York. Miss Roberts returned to the popular morning program after undergoing a bone marrow transplant five months ago. (AP Photo/ABC, Heidi Gutman)

Photo by: Heidi Gutman

Co-anchors Robin Roberts (left) and George Stephanopoulos appear on ABC's "Good Morning America" on Wednesday, Feb. 20, 2013, in New York. Miss Roberts returned to the popular morning program after undergoing a bone marrow transplant five months ago. (AP Photo/ABC, Heidi Gutman)