article_snippet.sent: George North was left out cold on the pitch at Franklin's Gardens and had to be taken off on a stretcher .
article_snippet.sent: It was the third time that the Wales and Lions winger had been knocked out in the space of two months .
article_snippet.sent: George North was left unconscious by the clash; a third blow to George North's head in the space of two months.
highlights_snippet.sent: It was North's third blow to the head in the space of two months .
  
highlights_snippet.sent: The Welsh winger has been advised to take a month off from playing .