This estimate is based on major birth defects and may be an underestimate because some people with the deletion have few symptoms and may not have been diagnosed.
That is the condition may be more common because some people with the deletion have few signs and symptoms and may not have been diagnosed. This estimate is based on major birth defects and may be an underestimate.
This estimate is based on major birth defects and may be an underestimate. That is the condition may be more common because some people with the deletion have few signs and symptoms and may not have been diagnosed.
This estimate is based on major birth defects and may be an underestimate. That is the condition may be more common because some people with the deletion have few signs and symptoms and may not have been diagnosed.