 Complete the following phrase:  Glasser also won six medals at the ICF Canoe Sprint World Championships with five golds K-1 4 x 500 m: 1948, 1950, 1954; K-2 500 m: 1950, K-2 1000 m: 1950 and one silver K-1 500 m: 1948. Note that the K-1 500 m, K-1 4 x 500 m, and K-2 500 m events were part of the International Canoe Federations 