There is no [color=sienna]national pediatric cancer registry[/color][color=blue] that would let researchers track child and teenage patients through their lives[/color] [color=darkorchid]as they can do in the case of adult sufferers[/color].

• 没有能让研究人员像对待成年患者那样通过儿童和青少年患者的生活对他们进行跟踪(研究)的全国儿科癌症登记(制度).