Cardiomyopathy Research Articles and Links Clinical, pathological, and biochemical studies in a patient with propionic acidemia and fatal cardiomyopathy. Clinical Approach to Genetic Cardiomyopathy in Children Children’s Cardiomyopathy Foundation 丙酸血症: a rare case of cardiomyopathy Pamphlets/Educational Material from Children’s Cardiomyopathy Foundation 长QT Coincidence of Long QT Syndrome and Propionic Acidemia.