Addendum to: Genetics in Medicine 15:153–156 (2013); https://doi.org/10.1038/gim.2012.165, published online 3 October 2013.

This document was reaffirmed by the ACMG Board of Directors as of 27 April 2020 with the following addendum:

Since this document no longer meets the criteria for an evidence-based practice guideline by the College, it has been reclassified as a Clinical Practice Resource.