Incidence and Related Factors for Hospital-Acquired Pneumonia Among Older Bedridden Patients in China: A Hospital-Based Multicenter Registry Data Based Study oleh Jing Jiao, Xiang-yun Yang, Zhen Li, Yan-wei Zhao, Jing Cao, Fang-fang Li, Ying Liu, Ge Liu, Bao-yun Song, Jing-fen Jin, Yi-lan Liu, Xian-xiu Wen, Shou-zhen Cheng, Lin-lin Yang, Xin-juan Wu, Jing Sun, Jing Sun