1Autistic features: cross-cultural comparisons. The reader should be aware that there are potential misunderstandings in the use of the term autism. Principally this is due to different criteria being set in different countries. Therefore one would not be comparing like with like.
Bearing this point in mind you may find it helpful to browse through a book by Nielsen L (1990) Are You Blind? Promotion of the development of children who are especially developmentally threatened. Sikon, Denmark.