Parallel bars world champion Lukas Dauser of Germany may be a doubt for the gymnastics competition at the Paris Olympics after injuring himself in a qualifying competition on Saturday. Dauser, 31, injured his right upper arm during a routine on the rings in an all-around competition inn Rüsselsheim. An MRI scan in a hospital in nearby Mainz was to determine the exact nature of the injury. “I am not feeling so good after the loss of Lukas. You try to ask yourself questions but don’t find answers. I spoke to him and he doesn’t understand how it could happen,” team coach Valeri Belenki said. Bele…