Exclusion criteria
respiratory tract infection, hypertension, psychiatric disorders
RESPIRATORY TRACT INFECTION, RENAL INSUFFICIENCY, HYPERTENSION, CARDIOVASCULAR SYSTEM DISEASES
Screened patients who meet one of the following criteria are not eligible for the study:① Pregnant, breastfeeding women or those who refuse to sign the ICF;② Smoking or having quit smoking ≤ 2 years;③ History of respiratory tract infection within 8 weeks;④ Renal insufficiency, pregnant women, breastfeeding women;⑤ Patients who need to take an angiotensin-converting enzyme inhibitor (ACEI) for a long time;⑥ Other psychiatric disorders or drug dependence;⑦ Patients with hypertension or other cardiovascular system diseases;⑧ The researcher believes that there are other circumstances that make the patient unsuitable for entry into the study.