Retraction: MicroRNA-20a-5p promotes colorectal cancer invasion and metastasis by downregulating Smad4

Affiliations

• ¹ Department of General Surgery, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
• ² Department of Oncology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
• ³ Department of Pathology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
• ⁴ Department of Gastroenterology, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
• ⁵ Department of Pathology, Fudan University Affiliated Shanghai Cancer Center, Shanghai, China.
• ⁶ Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
• ⁷ Department of Neuroscience, School of Medicine, Temple University, Philadelphia, PA, USA.
• ⁸ Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China.