The American Speech-Language Hearing Association (ASHA) oversees professional competencies in the fields of speech-language pathology and audiology. ASHA has many wonderful resources including these on feeding:
http://www.asha.org/public/speech/swallowing/feeding-and-swallowing-disorders-in-children/
If you prefer a slide show format you can click here:
ASHA Feeding and Swallowing Problems in Children
Talk - Down Syndrome 
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