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Distance from the origin of the brachiocephalic trunk to the origin of the right common carotid artery and the distance from the origin of the left subclavian artery to the origin of the left vertebral artery
A : Distance from the origin of the brachiocephalic trunk to the origin of the right common carotid artery, B : Distance from the origin of the left subclavian artery to the origin of the left vertebral artery, SD : standard deviation
