SETTING and PARTICIPANTS:Five patients with DRD,2000-10/2001-07 in Changhai Hospital of the Second Military Hospital of Chinese PLA,and their families,totally 12 members from 3 families,were involved in this research.

• 地点和对象:来自3个家庭的5例于2000-10/2001-07在解放军第二军医大学长海医院神经内科确诊的DRD患者及其亲属共12个成员。