The Paediatric Radiation Oncology Society
The Paediatric Radiation Oncology Society, PROS is a SIOP collaborative society. Our ambition is to to bring together all radiation oncologists and allied professionals involved in paediatric oncology.
The International Society of Paediatric Surgical Oncology
The International Society of Paediatric Surgical Oncology is a SIOP collaborative society. IPSO is an international society of surgeons who specialise in the surgical care of children with cancer.
Childhood Cancer International
Childhood Cancer International (CCI; formerly International Confederation of Childhood Cancer Parent Organizations) was founded in 1994, as an umbrella organization of childhood cancer grassroots and national parent organizations.