Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TERASAWA Yuka and SAKAI Kenichiro and ARAI Ayumi and KOMATSU Teppei and MITSUMURA Hidetaka and IGUCHI Yasuyuki,Timing of Valsalva maneuver and contrast injection for detecting patent foramen ovale on transesophageal echocardiography,Neurosonology,0917-074X,The Japan Academy of Neurosonology and Embolus,2022-04-30,35,1,4-8,https://cir.nii.ac.jp/crid/1390292029973758720,https://doi.org/10.2301/neurosonology.35.4