Dr. Tiffany Simms-Waldrip (left) walks the halls of the Stem Cell Transplant Unit with patient Akshaj Nagilla, who uses an exercise roller, at Children's Medical Center Dallas on Jan. 15, 2019. Akshaj, 7, just received a second transplant to treat his leukemia. Simms-Waldrip is a associate professor of pediatrics at UT Southwestern Medical Center and clinical director of the marrow transplant program at Children's Health.
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