Researchers (IMAGE) UT Southwestern Medical Center Caption Dr. David Johnson (left), Sandra Garcia, Jingsheng Yan, and Dr. David Gerber (right) review a lengthy list of exclusion criteria in a clinical trial protocol. Researchers found a nearly 60 percent increase in exclusion criteria by reviewing 74 National Cancer Institute-sponsored lung cancer trials from 1986 to 2016. Credit UT Southwestern Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.