article_snippet: Some are very light, and then you have different grades of concussion, brain damage. '
article_snippet: Now the checks are very stringent. '
article_snippet: With the incidents we've had, in particular with Jules (Bianchi in Japan last year), the medical people are going to be more strict, and so the medical people should be.'
article_snippet: The Spaniard waves to supporters after leaving hospital, having passed numerous tests .