Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) LILLEHEI CW,The results of direct vision closure of ventricular septal defects in eight patients by means of controlled cross circulation,Surg Gynecol Obstet,,,1955,101,,446-466,https://cir.nii.ac.jp/crid/1572543025652929792,