Defining Expressive Language Benchmarks for Children with Down Syndrome by Angela John Thurman, Lauren Bullard, Leona Kelly, Caitlyn Wong, Vivian Nguyen, Anna J. Esbensen, Jennifer Bekins, Emily K. Schworer, Deborah J. Fidler, Lisa A. Daunhauer, Carolyn B. Mervis, C. Holley Pitts, Angela M. Becerra, Leonard Abbeduto

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