Michael H. Hsieh, M.D., Ph.D. (IMAGE) Children's National Hospital Caption This is Michael H. Hsieh, M.D., Ph.D., a urologist at Children's National Health System and the study's senior author Credit Children's National Health System Usage Restrictions Please credit Children's National Health System 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.