Neoaortic root diameters and aortic regurgitation in children after the Ross operation. - Hörer,J.; Hanke,T.; Stierle,U.; Takkenberg,J.J.M.; Bogers,J.J.C.; Hemmer,W.; Rein,J.G.; Hetzer,R.; Hübler,M.; Robinson,D.R.; Sievers,H.H.; Lange,R. (Ann Thorac Surg, 2009)