1 From the Department of Histopathology (G.R., S.W., J.L.), Ningbo Clinical Pathology Diagnosis Center, China; and Surgery Center (J.W.), Affiliated People's Hospital, Ningbo University, China. gerong123@sina.com.
2 From the Department of Histopathology (G.R., S.W., J.L.), Ningbo Clinical Pathology Diagnosis Center, China; and Surgery Center (J.W.), Affiliated People's Hospital, Ningbo University, China.