1. James C. Robinson () is the Leonard D. Schaeffer Professor of Health Economics in the Division of Health Policy and Management, School of Public Health, at the University of California Berkeley, in Berkeley, California. He is a Health Affairs contributing editor.
2. Quentin Jarrion is a research physician, Health Information Management Department, University Hospitals of Reims, in Reims, France. At the time this research was initiated, he was a visiting scholar at the University of California Berkeley.