Sarah Kliff, investigative health care reporter for The New York Times, talks about her reporting on the booming business of autism treatment clinics, where she found allegations of fraud, and even harm to the children the centers aim to help.

Photo: Karen Lajmoraki, L, an instructional assistant, works with Steven Moshuris, R, an autistic student who uses an iPad as a communication device, at Belle View Elementary School on April 11, 2012, in Alexandria, VA. This is an autism classroom where students are using iPads as communication devices and also to work on social skills and conversation. (Jahi Chikwendiu/The Washington Post via Getty Images)

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