Complete the following sentence: Siegenthaler competed with Team Switzerland at the 2013, Siegenthaler competed with Team Switzerland at the 2013,
2014 and 2015 IIHF World U18 Championships. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️