This morning, “Good Morning America” anchor and cancer survivor Robin Roberts is guest staring in a special episode of Disney Junior’s “Doc McStuffins” for National Cancer Survivors Day on Disney Channel. Roberts plays the voice of “Audrey’s Mom” in an episode titled “Hannah the Brave.” In the heartwarming story, Audrey is a four-year-old chemotherapy patient whose doll Hannah has an issue that leads to her hair loss too. The episode includes an original song, “Brave Like You.” Chris Nee, creator and executive producer of “Doc McStuffins,” said, “Since ‘Doc McStuffins’ premiered, we’ve been contacted by numerous families of children who have been...