Clinical characteristics and risk factors in patients with SARS-CoV-2 Omicron variant infection complicated with cardiovascular diseases oleh Xiao-hua Yu, Yu-wei Liao, Ling Rong, Bi-gui Chen, Run-jun Li, Guang-kuan Zeng, Li-li Liu, Yan-bin Cao, Jian-lian Liang, Bai-ru Lai, Yan-qing Zeng, Yu-chan Huang, Li-ye Yang