Elizabeth Ward, a managing director in epidemiology and surveillance at the cancer society, said the biggest contributor to the decrease in deaths is the use of screening tests for colorectal cancer, which can detect the disease early when it is most trea
Elizabeth Ward, a managing director in epidemiology and surveillance at the cancer society, said the biggest contributor to the decrease in deaths is the use of screening tests for colorectal cancer, which can detect the disease early when it is most trea
这种方法使得在癌症在最可治愈的早期就被发现，甚至还能找到癌症早期出现的息肉，并在其转化成恶性肿瘤前将其切除，从而达到完全预防癌症的目的。