Health-related Quality of Life and Utilization of Health Services in Patients with Diabetes Alone versus Those with Comorbid Diabetes Mellitus:a Comparative Study 
SONG Chen-xiao,XU Ai-jun*
Chinese General Practice . 2018, (15): 1785 -1789 .  DOI: 10.3969/j.issn.1007-9572.2018.00.147