Frank Biro, MD (IMAGE) Cincinnati Children's Hospital Medical Center Caption Frank Biro, MD, led a team of experts who tracked hormone levels, growth rates and other factors for 14 years to reveal why girls entering puberty face an elevated risk of breast cancer Credit Cincinnati Children's 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.