Background and purpose: Coronavirus (QUID-19) is an infectious disease of the respiratory system that has been identified by the World Health Organization as an epidemic. Patients with Down syndrome are more likely to develop Quidd-19 disease with more severe complications due to the underlying comorbidities they have. The aim of this study was to evaluate the complications of Covid-19 disease...

the application of e-learning systems - as one of the solutions to the issue of anywhere and anytime learning – is increasingly spreading in the area of education. content management - one of the most important parts of any e-learning system- is in the concern of tutors and teachers through which they can obtain means and paths to achieve the goals of the course and learning objectives. e-learn...

Studies of headache risk factors are numerous but their results are based on clinics and hospitals. Few data have been reported in children. No data are available regarding migraine and tension-type headache risk factors among Iranianchildren. Therefore we determined the sociodemographic risk factors of migraine and tension-type headaches and their correlations in schoo...