original_query: Who were the members of the committee on concussions in football?
query: Who were the members of the NFL's Mild Traumatic Brain Injury Committee and its successor?
answer: The provided text names Ira Casson and Elliot Pellman as members of the NFL's Mild Traumatic Brain Injury Committee (later the Head, Neck and Spine Committee).  The text indicates there were other members, but doesn't name them.