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The study population divided by risk of coronary obstruction due to height (h) ≤ 12 (32%), sinus of Valsalva diameter (SOVd) ≤ 30 (14%), height (h) ≤ 12 and sinus of Valsalva diameter (SOVd) ≤ 30 (43%), or height (h) >12 and sinus of Valsalva diameter (SOVd) > 30 (11%).
