1. Department of Industrial and Operations Engineering University of Michigan1205 Beal Avenue Ann Arbor Michigan 48109USA
2. Operations Research Center Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139USA
3. W. P. Carey School of Business Arizona State University 300 E Lemon Street Tempe Arizona 85287USA
4. Department of Urology University of Michigan 1500 East Medical Center Drive Ann Arbor Michigan 48109USA