Misdiagnosed my son as having a constipation problem when he actually had gallstones and needed surgery. Also, due to the time it was taking, I gave my son earbuds to listen to music to keep his mind off of his stomach pain and Dr. Zahn came in raising his voice that my son was disrespectful for using the earbuds. Told us that we should try over the counter meds next time before seeking medical attention. I am so glad that a great doctor at a different ER found the real problem a week later when we had to rush him to the hospital again for the same issues.