New signs characteristic of myocardial bridging demonstrated by intracoronary ultrasound and Doppler - Ge, J; Jeremias, A; Rupp, A; Abels, M; Baumgart, D; Liu, F; Haude, M; Gorge, G; von Birgelen, C; Sack, S; Erbel, R (Eur Heart J, 1999)