claim: Parkinson's disease causes tremors.
evidence: The ROH World Championship is a professional wrestling world championship in Ring of Honor -LRB- ROH -RRB- .. Ring of Honor. Ring of Honor. professional wrestling. professional wrestling. world championship. Championship ( professional wrestling )#World championships. The championship has also been through other companies in cooperation with ROH through the Global Professional Wrestling Alliance -LRB- GPWA -RRB- , a now-defunct governing body of many independent wrestling promotions throughout the United States and Japan .. Global Professional Wrestling Alliance. Global Professional Wrestling Alliance