[1] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[2] Duke Univ, Sch Med, Dept Urol, Durham, NC USA
[3] Univ Hosp Giessen Marburg, Dept Pediat Surg & Urol, Marburg, Germany
[4] Univ Hosp Giessen Marburg, Dept Pediat Surg, Giessen, Germany
[5] Univ Iowa, Carver Coll Med, Dept Radiol, Iowa City, IA USA
[6] Univ Med Ctr Utrecht, Wilhelmina Childrens Hosp, Dept Radiol & Nucl Med, Utrecht, Netherlands
[7] St Jude Childrens Res Hosp, Dept Radiol, Memphis, TN USA
[8] Univ North Carolina, Sch Med, Dept Radiat Oncol, Chapel Hill, NC USA
[9] Mayo Clin, Dept Pediat & Adolescent Med, Rochester, MN USA
[10] IRCCS Azienda Osped Univ Bologna, Pediat Hematol & Oncol, Bologna, Italy
[11] Univ Utrecht, Univ Med Ctr Utrecht, Div Imaging & Oncol, Utrecht, Netherlands
[12] PSL Univ, Inst Curie, SIREDO Oncol Ctr Care Innovat & Res Children Adol, Paris, France
[13] Royal Manchester Childrens Hosp, Manchester, England
[14] Ann & Robert H Lurie Childrens Hosp Chicago, Div Hematol Oncol Stem Cell Transplant, Chicago, IL USA
[15] Univ Med Ctr Utrecht, Dept Radiat Oncol, Utrecht, Netherlands
[16] Univ Med Ctr Utrecht, Dept Pathol, Utrecht, Netherlands
[17] Zentrum Nukl Med & PET CT, Bremen, Germany
[18] Zentrum Moderne Diagnost ZEMODI, Bremen, Germany
[19] Univ Hosp Padova, Womans & Childs Hlth Dept, Pediat Surg Unit, Padua, Italy
[20] H Lee Moffitt Canc Ctr & Res Inst, Sarcoma Dept, Tampa, FL USA
[21] CancerCare Manitoba, Dept Pediat Hematol Oncol, Winnipeg, MB, Canada
[22] Univ Hosp Bonn, Dept Pathol, Sect Pediat Pathol, Bonn, Germany
[23] Cincinnati Childrens Hosp Med Ctr, Div Pediat Gen Thorac Surg, Cincinnati, OH USA
[24] Univ Chicago, Dept Pediat, Chicago, IL USA
[25] Univ Kentucky, Div Pediat Surg, Lexington, KY USA