By the time Scott and Gerri Williams brought their two young children to see Dr. Zahangir Khaled at his Methodist Medical Group Pediatric Gastroenterology practice in 2007, their lives were unraveling rapidly.
Khaled was the fourth GI doctor the family had seen.
"Austin and Sydney had been typical, non-complicated pregnancies. But when Austin was 1 year old, he started regressing," said Gerri Williams.