?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hill%2C+RM&rft.aulast=Hill&rft.aufirst=RM&rft.pages=865-874&rft.volume=4&rft.atitle=Time%2C+pattern%2C+and+outcome+of+medulloblastoma+relapse+and+their+association+with+tumour+biology+at+diagnosis+and+therapy%3A+a+multicentre+cohort+study&rft.title=The+Lancet+Child+%26+Adolescent+Health&rft.issue=12&rft.date=December+2020&rft.genre=article