DAVID ANSELL, MD, a Chicago based physician and health activist, has been an internal medicine physician since training at Cook County Hospital in the late 1970s, where he spent seventeen years. Now, chief medical officer at Rush University Medical Center, he also sees patients, teaches, volunteers as a doctor at a Chicago free clinic, and participates in medical missions to the Dominican Republic and Haiti. He is married to a doctor and has two children.

Bronson Pinchot, an Audie Award-winning narrator and Audible's Narrator of the Year for 2010, received his education at Yale University. He restores Greek Revival buildings and appears in television, film, and on stage whenever the pilasters and entablatures overwhelm him.