Pretreatment prognostic factors for children with hepatoblastoma - Results from the International Society of Pediatric Oncology (SIOP) Study SIOPEL 1. - Brown,J.; Perilongo,G.; Shafford,E.; Keeling,J.; Prichard,J.; Brock,P.; Dicks-Mireaux,C.; Phillips,A.; Vos,A.; Plaschkes,J. (Eur J Cancer, 2000)