Clinical characteristics and prognostic factors in non-HIV patients with Pneumocystis jirovecii pneumonia and BALF cytomegalovirus co-detection: a retrospective cohort study - Chaomin Guo; Yajiao An; Jingyun Ye; Yanning Ma; Qiang Zhao; Lifeng Wang; Wei Ma; Mingze Zhang; Miaoyu Wang; Yang Wang; Jiyong Yang; Liyan Ye; et al. (Frontiers in Public Health, 2026)