“…Often, multiple methods can be combined [4, 5, 7-9, 11, 12, 15]. The most common internal causes of death are cardiovascular diseases [1,5,16,17]. The potential diseases are diverse, including chronic hypertensive cardiovascular disease, aortic coarctation, atrioventricular node tumor, AV node artery fibromuscular dysplasia, air embolism, subarachnoid hemorrhage, right ventricular arrhythmogenic cardiomyopathy, sudden death due to arrhythmia syndrome, aortic dissection, hypertrophic cardiomyopathy, ischemic heart disease, idiopathic fibrosis, idiopathic left ventricular hypertrophy, mitral valve prolapse, myocardial infarction, various channelopathies, and cardiac tamponade [1,2,5,16,17].…”