Retraction Note: Effects of CREB1 gene silencing on cognitive dysfunction by mediating PKA-CREB signaling pathway in mice with vascular dementia - Xin-Rui Han; Xin Wen; Yong-Jian Wang; Shan Wang; Min Shen; Zi-Feng Zhang; Shao-Hua Fan; Qun Shan; Liang Wang; Meng-Qiu Li; Bin Hu; Chun-Hui Sun; et al. (BMC, 2023)