 Complete the following phrase:  Bjørgen has eighteen World Championship gold medals, twelve of them individual. Her first gold medal in the World Championships came in the individual sprint in Val di Fiemme in 2003, where she also picked up a silver in the 4 × 5 km. She took three medals in Oberstdorf in 2005 in the 30 km classical, team sprint, and 4 × 5 km. She also won a silver in the 7.5 km  7.5 km double pursuit and a bronze in the 10 km free in the same games. At the 