- Bobby Ghassemi was left comatose after a 2010 car crash
- A doctor told his desperate parents about fish oil for traumatic brain injuries
- The treatment was used on the survivor of the 2006 West Virginia mine disaster
- Experts say more studies are needed to answer questions on fish oil treatment
(CNN)Time seemed to slow as Marjan Ghassemi saw her 17-year-old son, Bobby, lying in a hospital bed after a car crash.