title: Invited commentary.
authors.affiliation: Department of Cardiovascular Surgery, Okayama University Medical School, 2-5-1 Shikata-cho, Kitaku, Okayama City, 700-8558, Japan. profsano@hotmail.co.jp
authors.forename: Shunji
authors.initials: S
authors.lastname: Sano
mesh_terms: D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D011667:Pulmonary Veins / Q000002:abnormalities* / Q000601:surgery*