Cleft lip and cleft palate can cause additional problems of parental rejection which results in a deprivation of important referents for the child.
The over powering disappointment may result in an initial rejection of the child by the mother.
In some cases the family may even disintegrate.
The end result is a serious reduction in referents (interaction with the mother) in those important first hours of life.
This can have measurable consequences months down the line.
This disorder can be more extensive than just a cleft lip or palate.
The openings can extend clear up to the eye sockets, which themselves, may be located on the side of the head, like a rabbit.
Despite these anomolies in structure, this would be my disorder of choice if I had to make such a decision. With today's medical advancement, the position of the eyes can be corrected surgically.