https://www.selleckchem.com/pr....oducts/estradiol-ben
The purpose of this study is to explore the smoking-related behaviors of people ≥60 years of age with respiratory diseases in Shangqiu area. A total of 550 patients with respiratory diseases ≥60 years old who were treated at the First People's Hospital of Shangqiu from April 2015 to April 2017 were selected as the survey subjects through random sampling. Among them, there were 351 males and 199 females; the age ranged from 60 to 86 (72.85±5.71) years old. Follow-up until April 2020, and the follow-up was 3 years or more and r
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