Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ozumi Kiyoshi and Ohe Haruto and Sakai Hideaki and Harada Takashi and Yonashiro Suguru,A case of variant angina provoked right ventricular branch artery spasm by intracoronary ergonovine maleate injection,Shinzo,0586-4488,Japan Heart Foundation,2001,33,5,415-419,https://cir.nii.ac.jp/crid/1390282680463640960,https://doi.org/10.11281/shinzo1969.33.5_415