中国老年人共病状况及其对医疗卫生支出的影响研究
金琇泽,路云
Prevalence of Comorbidity among the Elderly and Its Impact on Healthcare Expenditure in China 
JIN Xiuze,LU Yun
中国全科医学 . 2019, (34): 4166 -4172 .  DOI: 10.12114/j.issn.1007-9572.2019.00.616