Heidi Kalkwarf und Health Person-Info 

( Ich bin Heidi Kalkwarf)
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Cases of rickets rising among U.S. children – The Mercury News

www.mercurynews.com
Dr. Heidi Kalkwarf of the Cincinnati Children's Hospital led a national study that gave bone scans to 1,500 healthy children ages 6 to 17 to see ...

What Kids Need For Healthy Bones - CBS News

www.cbsnews.com
Researchers Say Many Aren't Getting Enough Milk, Sunshine And Exercise
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