11.   Repeated concussions can cause premature senility and other brain dysfunction.

12.   Repeated concussions can lead to premature senility and other kinds of brain damage.

13.   Repeated concussions can cause premature senility and other kinds of brain damage.

14.   Repeated concussions have ended the careers of such players as Chris Miller, Al Toon and Roger Staubach.

15.   The two Lindros brothers both played with a physical, rambunctious style and both sustained repeated concussions.

16.   Young continues to speak with some of his contemporaries who were forced out of the game by repeated concussions, including Al Toon and Merrill Hoge.

17.   Young continues to speak with contemporaries who were forced out of the game by repeated concussions, including Al Toon and Merrill Hoge.

18.   Young continues to consult with specialists and speak with players who have been driven from the game by repeated concussions.