An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Age of children with vitamin D deficiency presenting with (dark bars) and without (light bars) hypocalcaemic symptoms. Growth velocity lines12 for boys (solid line) and girls (dotted line) have been superimposed onto the graph.