DOI: 10.1055/s-00000009

American Journal of Perinatology

References

Steffenburg S, Gillberg C, Hellgren L , et al.
A twin study of autism in Denmark, Finland, Iceland, Norway and Sweden.

J Child Psychol Psychiatry 1989;
30 (3) 405-416

Steffenburg S, Gillberg C, Hellgren L , et al.
A twin study of autism in Denmark, Finland, Iceland, Norway and Sweden.

J Child Psychol Psychiatry 1989;
30 (3) 405-416

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