There was a maternal child health related project in NYC called Text4Baby that started last year. They sent out regularly scheduled "health tips" during pregnancy and I think up through the baby's first year of life.
They're considered to be a "successful" project at reaching people, although I'm not sure what exactly they were measuring to determine their success.
Here's their website:
http://www.text4baby.org/index.html
Miriam Wood
Kingston, NY
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