Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yamashita Nobuo,Required sample sizes in clinical trials for lung cancer treatment results that the survival-time patterns of patients have lognormality,Haigan,0386-9628,The Japan Lung Cancer Society,1974,14,2,79-82,https://cir.nii.ac.jp/crid/1390282679659026432,https://doi.org/10.2482/haigan.14.79