[On the formal genesis of congenital defects in the atrioventricular valves of the heart].
D006321:Heart; D006349:Heart Valve Diseases; D006351:Heart Valves; D006801:Humans; D008943:Mitral Valve / Q000002:abnormalities*; D014261:Tricuspid Valve / Q000002:abnormalities*
MITRAL VALVE/abnormalities; TRICUSPID VALVE/abnormalities