著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Hamad S. Alyami and Mohammad H. Alyami and Obaid M. Al Abbas and Shoab Ahmad and Mohammed M. Alyami and Ibraheem S. Banihameem and Ali D. Al-Swedan and Mohammed Ch Al-Noaemi and Hadi J. Al Sulayyim and Musallam A. Sedran and Ali M. Al-Zubaidi,Epidemiology and Clinical Characteristics of the First 500 Positive Cases of COVID-19. A Multicenter Retrospective Study across the Najran Region of the Kingdom of Saudi Arabia (KSA),Open Journal of Epidemiology,2165-7459,"Scientific Research Publishing, Inc.",2021-01-01,11,,222-236,https://cir.nii.ac.jp/crid/1873398393036677888,https://doi.org/10.4236/ojepi.2021.113019