title: The segmental approach clarified.
mesh_terms: D003330:Coronary Vessel Anomalies / Q000175:diagnosis; D003331:Coronary Vessels / Q000033:anatomy & histology; D006330:Heart Defects, Congenital / Q000145:classification / Q000175:diagnosis*; D006801:Humans; D008722:Methods; D008943:Mitral Valve / Q000002:abnormalities; D014261:Tricuspid Valve / Q000002:abnormalities