1.   And then, it will focus on the recurring concussions Brett Lindros has been suffering.

2.   San Francisco has some options if star quarterback Steve Young decides to retire because of recurring concussions.

3.   Senior receiver Erik Holcomb, from Westlake Village, has retired because of recurring concussions.

4.   The first involves Brett Lindros, who is in the second year of a lucrative five-year deal, but who has been sidetracked by recurring concussions.

5.   He was diagnosed with traumatic encephalopathy, a disease caused by recurring concussions and whose primary effect is to debilitate the brain.