Paediatric oncologists collaborate internationally

EDITOR,—Karol Sikora's editorial1 and M C G Stevens and colleagues' article2 highlight problems in dealign with cancer, especially in childhood. Although over the past two to three decades major advances in overall survival have been made for most children with cancer, some tumours remain a huge challenge. One change has been the expectation of society in general and individual parents in particular that children should not die. This wish obviously motivates families and oncology units to maximise survival and minimise toxicity and to use innovative treatments …