Dr. Peter Roland (IMAGE) UT Southwestern Medical Center Caption Dr. Peter Roland, chairman of otolaryngology -- head and neck surgery, helped develop new national guidelines regarding the removal of wax from the ear. Credit UT Southwestern Medical Center Usage Restrictions Please use our credit line. 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.