Prevalence, risk factors, and clinical characteristics of pulmonary embolism in patients with acute exacerbation of COPD in Plateau regions: a prospective cohort study.

"Declarations Ethics approval and consent to participateThe studies involving human participants were reviewed and approved by the Research Ethics Board at Qinghai Provincial People’s Hospital, Qinghai University (Ethical number:2018-53) and was in accordance with the Helsinki Declaration. Oral informed consent was obtained from all patients involved in this study. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study received the following funding: The key projects of Health commission of Qinghai Province (2017-wjzd-10 to Dr. Jie Duo), The Planning Project of Qinghai Department of Science and Technology (Grant NO. 2023-ZJ-719 to Dr. XiaoKai Feng), 2023 Kunlun Talents of Qinghai Province•High-end Innovation and Entrepreneurship Talent Project-Cultivate leading talents(NO.2023 to Dr XiaoKai Feng)."