Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
D. G Altman,Confidence intervals for the number needed to treat,BMJ,0959-8138,BMJ,1998-11-07,317,7168,1309-1312,https://cir.nii.ac.jp/crid/1360011145163109504,https://doi.org/10.1136/bmj.317.7168.1309