I think you hit the nail on the head with the "best treatment for autism in montreal," you're not searching for "best content on autistic treatment in montreal"comment.
To go completely off topic and into a semi-rant, the only good answer to that query is a page advising you to leave Quebec and it's awful, disgraceful, disgusting so-called 'treatment' for autistic children. When doing the search myself, I got lots of great 'content,' but their is no treatment that could qualify as 'best.'
They raise a real valid question.