Clinical characteristics and acute complication of COVID-19 patients with diabetes: a multicenter, retrospective study in Southern China oleh Xiao-ying Zhou, Shao-feng Huang, Jun-xu Lin, Hai-ni Zhi, Lu Xiao, Xiang-zhu Wang, Kai-heng Guo, Lin Zhou, Tao Long, Hui-min You, Ming-run Lin, Xiang-ya Luo, Wei-ping Sun, Chun-ping Zeng