Letters to the EditorLETTERS TO THE EDITOR Is Estimating USMLE Performance Useful? Isaac J. Kirstein, DO Notes and Affiliations Notes and Affiliations Published: June 1, 2007 Isaac J. Kirstein, DO, Director of Medical Education Associate Professor of Medicine Midwestern University/Chicago College of Osteopathic Medicine Downers Grove, Illinois J Osteopath Med; 107(6): 213-213 https://doi.org/10.7556/jaoa.2007.107.6.213