Clinical features, microbial co-detection profiles, and 28-day mortality of carbapenem-resistant Klebsiella pneumoniae pneumonia: a retrospective study with mNGS-based resistance gene detection - Yonggang Liang; Xinjing Fu; Huan Xu; Lingling Cui; Zhe Xing; Jianglong Ren; Hua Xiao; Pengju Lv; Shoukui Hu (BMC Infectious Diseases, 2026)