1 Department of Gynecology, Zhejiang University School of Medicine Women's Hospital, Hangzhou, China.
2 Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
3 Department of Pathology, Parkland Hospital, Dallas, Texas, USA.
4 Department of Pathology, International Peace Maternity and Child Health Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
5 Department of Pathology, Zhejiang University School of Medicine Women's Hospital, Hangzhou, China.