Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yamamoto Ryohei,Advantages and disadvantages of observational study using real world data,Annals of Japan Prosthodontic Society,1883-4426,Japan Prosthodontic Society,2024,16,1,17-21,https://cir.nii.ac.jp/crid/1390299086455825152,https://doi.org/10.2186/ajps.16.17