I have a main form which stores profiles of children.  A second form creates a health record for each one. I only want one health record per child. The health record's first field is a lookup to select the child it stores health information about.

How do I dynamically adjust the pick list to only display the names of the children who have not yet had health records created?  I assume I need a Deluge script for this and it's a bit beyond me at the moment. (Still learning!) 

Any hints would be appreciated!

Jennifer