Nemours associate Lindsey Killian and her husband, Tom,  are the proud parents of two young sons: four-and-a-half-year-old T.J. and one-year-old Nicholas. T.J. and Tom were each diagnosed at birth with a metabolic condition known as PKU. In this second of two episodes, we'll delve into the extra work required for the Killians just to travel together, the struggles they've faced with health insurance coverage, and the reason Lindsey was determined to someday work at Nemours. Carol Vassar, producer