@article{KoscielniakSparberSauerScheeretal.2021,
  author    = {Ewa Koscielniak and Monika Sparber-Sauer and Monika Scheer and Christian Oliver Vokuhl and Bernarda Kazanowska and Ruth Ladenstein and Felix Niggli and Gustaf Ljungman and Michael Paulussen and Stefan S. Bielack and Guido Seitz and J{\"o}rg Fuchs and Erika Hallmen and Thomas Klingebiel},
  title     = {Extraskeletal Ewing sarcoma in children, adolescents, and young adults. An analysis of three prospective studies of the Cooperative Weichteilsarkomstudiengruppe (CWS)},
  journal   = {Pediatric Blood \& Cancer},
  volume    = {68},
  number    = {10, art. e29145},
  pages     = {1 -- 10},
  doi       = {10.1002/pbc.29145},
  year      = {2021},
}