Winger David Booth and goaltender Scott Clemmensen are among the Florida Panthers who have said they will not participate.
Booth, who played in all 82 games for the Panthers this season, said he is playing through some injuries and needs a break.
Clemmensen, who played for Team USA the past two summers, will not be playing because of family commitments. Clemmensen and his wife Olivia are expecting their second child in the coming weeks.
Defenseman Dmitry Kulikov said he would return and play for Russia, saying he enjoyed his experience last summer. Vokoun, who led Czech Republic to the Gold last summer, will not play because of his pending free agency.
Former coach Pete DeBoer will be an assistant for Team Canada.
-- Panthers equipment manager Chris Scoppetto will be going to Worlds as well working with Skille and Team USA.