Complex sentence: Both twins died June 18,2006 from blunt force trauma causing brain injury, it was suggested that this injury was caused by either direct blows to the head or being thrown against a firm surface or severe shaking.
Split into simpler sentences: Both twins died June 18,2006 from blunt force trauma causing brain injury. It was suggested that this injury was caused by either direct blows to the head or being thrown against a firm surface or severe shaking.