Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HONDA Sakiko and KAWASAKI Tatsuya and YAMANO Michiyo and SATO Yoshimi and HARIMOTO Kuniyasu and MIKI Shigeyuki and KAMITANI Tadaaki and HIRAI Yasutaka,A case of calcified amorphous tumor with caseous calcification of the mitral annulus,Choonpa Igaku,1346-1176,The Japan Society of Ultrasonics in Medicine,2016,43,4,577-580,https://cir.nii.ac.jp/crid/1390282680174314368,https://doi.org/10.3179/jjmu.jjmu.a.60