Collaborations

• CWS is in european collaboration with the European pediatric soft tissue sarcoma study group EpSSG
  www.epssgassociation.it/en/
• and the European Cooperative Study Group for Pediatric Rare Tumors EXPeRT
  www.raretumors-children.eu
• CWS collaborates with the Children`s Oncology Group
  www.childrensoncologygroup.org