فهرست نشریات علمی دسترسی آزاد ایران

We have to indicate that the number of 100 was arbitrary. Collecting a large number of citations dose not necessary indicates that the study is the best and has a high level of evidence. This study by no means negate high quality important articles that have been published recently and had not enough time to increase their citations yet. Findings on COVID-19 Characteristics are rapidly changing and subject to selection bias. The current study was a cross-sectional study on August 6, 2020; therefore, our findings will be changed overtime.