Authors: Karl G Helmer; Jose Luis Ambite; Joseph Ames; Rachana Ananthakrishnan; Gully Burns; Ann L Chervenak; Ian Foster; Lee Liming; David Keator; Fabio Macciardi; Ravi Madduri; John-Paul Navarro; Steven Potkin; Bruce Rosen; Seth Ruffins; Robert Schuler; Jessica A Turner; Arthur Toga; Christina Williams; Carl Kesselman Journal: J Am Med Inform Assoc Date: 2011-04-22 Impact factor: 4.497