By Sarah Arnquist August 25, 2009 2:10 pm August 25, 2009 2:10 pm John Creighton Campbell is professor emeritus of political science at the University of Michigan and a visiting researcher at the Tokyo University Institute of Gerontology. He co-authored “The Art of Balance in Health Policy: Maintaining Japan’s Low-Cost, Egalitarian System” (Cambridge University Press, 1998). Dr. Campbell spoke wit