Efficacy and Safety of Platelet-Rich Plasma on Bronchopleural Fistula: A Pilot Prospective Cohort Study Yongshun Ye; Tingting Xu; Jinxia Lin; Yongna Cai; Zhuquan Su; Liya Lu; Yu Chen; Changgao Zhong; Chunli Tang; Weiquan Xiao; Haojie Liao; Shiyue Li; Xiaobo Chen;