1. Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, Hubei 443002, P.R. China
2. Department of Obstetrics, Yiling People's Hospital of Yichang City, The First Affiliated Hospital of Hubei Three Gorges Polytechnic, Yichang, Hubei 443002, P.R. China
3. Department of Histopathology, Yichang Akeman Pathology and Diagnostics Center, Yichang, Hubei 443002, P.R. China
4. Department of Medical and Radiation Oncology, Affiliated Sanming First Hospital of Fujian Medical University, Sanming, Fujian 365001, P.R. China