Development and validation of prognostic nomograms for adult with papillary renal cell carcinoma: A retrospective study Qingxiang Guo; Sai Li; Jiawei Zhu; Zewei Wang; Zhen Li; Junqi Wang; Rumin Wen; Hailong Li;

Primary signet-ring cell carcinoma of the urinary bladder ¿ A rare bladder tumor Xin Hong; Tian Wang; Qing Liu; Jianlong Bi; Hui Li;

Skipping breakfast and physical fitness among school-aged adolescents Jingcen Hu; Zhifei Li; Sixuan Li; Hui Li; Sijia Wang; Shuyu Wang; Lei Xu; Delun Yang; Tiecheng Ruan; Hang Li; Shuo Han; Qinghai Gong; Liyuan Han;