Goed oud worden 1997

Evaluation of the effectiveness of a health programme "Ageing Well" for elderly people: 3-wave panel. Wave1: just before start of the programme wave2: just after end of...面向老年人群的健康项目"Ageing Well"效果评估：三波追踪面板研究。第一波采集时点为项目启动前即刻，第二波为项目结束后即刻……