Multiple system atrophy is a complex condition that is likely caused by the interaction of multiple genetic, environmental, and lifestyle factors. Some of these factors have been identified, but many remain unknown.
Mandatory Seatbelts According to the U.S. Department of Transportation, in July 1984, New York State passed the first mandatory seatbelt law in the nation, followed by New Jersey, Illinois, Missouri, Michigan, and New Mexico.
At least one bill making seat belt use mandatory was introduced in all but two (Idaho and Nevada) of the 49 states with 1985 sessions. CDC has monitored these legislative activities using reports provided by the Commerce Clearing House, Inc. (Chicago, Illinois).