.. http://ndaviesco.com/Tonsall-sister-of-Podratz-from-Oppau?Liebausis=98 ©2018 citizen digital. all rights reserved. october 2009 (42)..david dodick, md, neurologist, mayo clinic; chairman, american migraine foundation...the presumptive leader is not defined, which leads to uncertainty and delays when leadership and action is needed,'' the report says..