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.
Jie dirbo - keturios darbo grupės dirbo pastaraisiais metais: kataraktos, nugaros skausmai, vainikinių arterijų ligos, pavyzdžiui, širdies smūgis ir prostatos vėžys.