https://www.selleckchem.com/Androgen-Receptor.html of osteoporosis might contribute to the development of VS. Although the workers in many occupations are at the greatest risk of catching and spreading COVID-19 due to assembling and contacting people, the owners of these occupations do not follow COVID-19 health instructions. The purpose of this study is to explain the reasons for not maintaining health guidelines to prevent COVID-19 in high-risk jobs in Iran. The present study was conducted with a qualitative approach among people with high-risk jobs in Tehran during March and April of 2020. Data were collected through semi-structured interviews with 31 people with high-risk occupations selected by purposeful sampling and snowballing. The data were analyzed using the conventional qualitative content analysis method and MAXQDA-18 software. Guba and Lincoln's criteria were also used to evaluate the quality of the research results. 4 main categories and 13 sub-categories were obtained, including individual factors (personality traits, lack of self-efficacy, little knowledge of the disease and how to observe healtAt the individual level increasing people's awareness and understanding about how to prevent COVID-19 and strengthening self-efficacy in observing health norms, at the social level highlighting positive patterns of observing health issues and training people about the consequences of social interactions during the outbreak of the virus, and at the macro level strengthening regulatory rules and increasing people's access to hygienic products and support for the vulnerable must be taken into account. This cross-sectional study aimed to examine the relationship between sleep habits and oral disease symptoms in adolescents. Among 62,276 adolescents who participated in the 13th Korea Youth Risk Behavior Web-based Survey (2017), we selected a total of 54,766 adolescents (age, 12-18years; male, 49.9%) for the final analysis, after excluding those who did not report t