Startling jump in NFL player claims for Parkinson's and ALS pushes payout projections past 65-year total in 18 months - Los Angeles Times
Football players more likely to develop neurodegenerative disease, study finds
ALS Association-Funded Research Shows Link Between Football and ALS
NFL players are four times more likely to develop ALS, a new study shows : NPR
Tim Green, ex-NFL player, reveals he has ALS
Nearly Silenced by A.L.S., an Ex-N.F.L. Pro Thrives Telling His Story - The New York Times
At least a dozen NFL players have suffered from ALS
Guest Blog – Are Sportspeople More Prone to MND?
Football player - Wikipedia
Tim Green: Former NFL player coping with the ALS he thinks was caused by football - 60 Minutes - CBS News