Original: After this work at Fremantle Hospital, Marshall did research at Royal Perth Hospital (1985-86) and at the University of Virginia, USA (1986-Present), before returning to Australia while remaining on the faculty of the University of Virginia.
Simplified: After this work at Fremantle Hospital, Marshall did research at Royal Perth Hospital (1985-86) and at the University of Virginia, USA (1986-1996), before going back to Australia.