The association between chronic disease resource utilization and illness uncertainty in COPD patients: a latent profile analysis 1Department of Nursing, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, Zhejiang, China 2Department of Nursing, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China 3Affiliated Hangzhou First People’s Hospital, School...