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Switzerland's Sven Luenberger (L) and Denmark's Oliver Kajer compete during the IIHF World Junior Championships in Vancouver, Dec. 29,2018. Switzerland won the preliminary match 4-0. (Xinhua/Andrew Soong)

Switzerland's Sven Luenberger (L) and Denmark's Oliver Kajer compete during the IIHF World Junior Championships in Vancouver, Dec. 29,2018. Switzerland won the preliminary match 4-0. (Xinhua/Andrew Soong)