 Complete the following phrase:  The UCI Track Cycling World Championships  Mens individual pursuit is the world championship individual pursuit event held annually at the UCI Track Cycling World Championships. Between its inception and 1992, the mens individual pursuit was separated into two events; one for professionals at and one for amateurs at . From 1993, all competitors competed in one open event of . It was first held at the 1939 championships, but had to be abandoned upon the outbreak of World War II, so the first complete competition was at the 