From the website:
Dr. McLawhon received his PhD in Biochemistry from the University of Chicago and his MD from Rush Medical College. After receiving his PhD, he served briefly as a Research Associate in Pediatrics at the Joseph P. Kennedy, Jr., Mental Retardation Research Center at the University of Chicago. Dr. McLawhon completed his medical training and residencies in anatomic and clinical pathology at Rush -Presbyterian -St. Luke's Medical Center and the University of Chicago Medical Center.