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CNN Fortune Small Business: A Better Prenatal Test

Life was proceeding as planned for Ravinder Dhallan, or so it seemed. Having earned doctorates in medicine and biomedical engineering at Johns Hopkins University, he had just started a radiation oncology residency at Massachusetts General Hospital. On the home front Dhallan and his wife, Hejung Christine Chang, had a daughter, and they were eager to see their family grow.

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