Dr.Paul Offitt of Children's Hospital of Philadelphia says it is time to move on and find the real cause for autism.

VOA: standard.2010.03.23

Prior to his appointment, Koop was surgeon-in-chief at the Children's Hospital of Philadelphia, where he was a pioneer in the field of pediatric surgery.

CNN: Former Surgeon General C. Everett Koop dies at age 96

The trial was run at three hospitals: Vanderbilt University Medical Center in Nashville, the Children's Hospital of Philadelphia and the University of California, San Francisco.

CNN: Study: Major benefits for spina bifida surgery in the womb

"This is not a cure, " said Dr. Scott Adzick, lead author of the study and the chief of pediatric surgery at the Children's Hospital of Philadelphia.

CNN: Study: Major benefits for spina bifida surgery in the womb