Tiger Lily, I had never heard of this before, which goes to show that this site is also a place of learning. The only thing that I've heard, that is only remotely close is at our school there is a set of triplets (2 girls, one boy). One of the girls was very, very small compared to her siblings. Her mother did tell me that she was on some medicine to help her grow. It must have worked, because now she is about the same size, just a smaller frame.
I'm so glad that there is the knowledge out there to help our children.