Original sentence: Among Mishin's current and former students  are Olympic champions Alexei Urmanov,Alexei Yagudin, and Evgeni Plushenko.Among the skaters who have attended those are Gheorghe Chiper and Stéphane Lambiel.Mishin has also runs summer seminars
Edited sentence: Among Mishin's pupils are Olympic champion Alexei Urmanov, World and Olympic Champions Alexei Yagudin, and Evgeni Plushenko and several champions of the Soviet Union and Russia.Among those who have benefited from his expertise are Romania's Gheorghe Chiper and Swiss skater Stéphane Lambiel.Mishin also advises many other skaters from other countries during his seminars in the summer