 Dr Leo Carlin wo mu kigo Beatson Institute cyo mu Bwongereza gikora ubushakashatsi kuri kanseri, yagize ati: Nubwo bwose tuzi ko umubyibuho ukabije wongera ibyago byo kurwara ubwoko 13 bwa kanseri butandukanye, ntabwo turamenya neza neza impamvu ziyi sano. 