Low levels of vitamin D have long been identified as an unwanted hallmark of weight loss surgery, but now findings of a new Johns Hopkins study of more than 930,000

This content is restricted to registered user. If you are an existing user, please log in. New users may register for free.

Existing Users Log In
   
New User Registration
 
 
 
 
 
 
Please indicate that you agree to the Terms of Service *
*Required field