John William Hagen was born May 11, 1940, in Minneapolis, Minnesota, to Wayne S. Hagen, M.D., and Elfie M. Erickson Hagen. Hagen's father left his home state of South Dakota to pursue medical training at the University of Minnesota, where he ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles