https://www.selleckchem.com/products/Semagacestat(LY450139).html Vertebral fractures are the most prevalent osteoporotic fractures and are paradoxically the most underdiagnosed. While only one-third of patients have acute pain, they can present other associated chronic complications. Vertrebal fractures are associated with the onset of new fractures, both vertebral and nonvertebral. Radiography of the dorsal-lumbar spine is a useful tool for detecting them but depends on the subjective interpretation of the physician conducting the assessment. New techniques, such as vertebral morphometry, have recently demonstrated greater efficacy in detecting v vertebral fractures and are performed concomitantly with bone densitometry. Knowing how to identify vertebral fractures is essential for the secondary prevention of new fractures and improving our patients' quality of life. The incubation period of COVID-19 helps to determine the optimal duration of the quarantine and inform predictive models of incidence curves. Several emerging studies have produced varying results; this systematic review aims to provide a more accurate estimate of the incubation period of COVID-19. For this systematic review, a literature search was conducted using Pubmed, Scopus/EMBASE, and the Cochrane Library databases, covering all observational and experimental studies reporting the incubation period and published from 1 January 2020 to 21 March 2020.We estimated the mean and 95th percentile of the incubation period using meta-analysis, taking into account between-study heterogeneity, and the analysis with moderator variables. We included seven studies (n=792) in the meta-analysis. The heterogeneity (I 83.0%, p<0.001) was significantly decreased when we included the study quality and the statistical model used as moderator variables (I 15%). The mean incubation period ranged from 5.6 (95% CI 5.2-6.0) to 6.7 days (95% CI 6.0-7.4) according to the statistical model. The 95th percentile was 12.5 days