Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) YONEMOTO Naohiro,Triangulation of evidence: causal inference from observational studies,Toyama Medical Journal,2189-2466,Toyama University Medical Society,2025,35,1,19-23,https://cir.nii.ac.jp/crid/1390303697453702912,https://doi.org/10.57561/tmjutmed.35.1_19