They've worked -- four working groups have worked during the past year: cataracts, back pain, coronary artery disease, which is, for instance, heart attack, and prostate cancer.
在过去一年里，我们有四个小组在工作， 他们的项目是： 白内障，背部疼痛， 冠状动脉疾病，比如心脏病， 和前列腺癌。