Baseline characteristics: Non-referred versus referred participants, in comparison with the general Dutch population (age >20 years).

Baseline characteristics: Non-referred versus referred participants, in comparison with the general Dutch population (age >20 years).基线特征：未转诊参与者与转诊参与者的对比分析，并与年龄大于20岁的荷兰普通人群进行对照。