Background: It is hypothesized that low selenium concentrations are associated with an increased risk of cardiovascular disease and that selenium supplements prevent coronary heart disease.
Background: It is hypothesized that low selenium concentrations are associated with an increased risk of cardiovascular disease and that selenium supplements prevent coronary heart disease.
背景：假定较低的硒浓度与增加的心血管疾病风险有关，补充硒可以预防冠心病。