CTTN and cancer: RETRACTION: MaM., ZhaoJ., WuQ., XiaoK., LiS., ZhuH., LiuC., XieH., and ZuoC., “MiRNA‐545 Negatively Regulates the Oncogenic Activity of EMS1 in Gastric Cancer,” Cancer Medicine7, no. 6 (2018): 2452–2462, 10.1002/cam4.1520.