You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Keshan disease is an endemic cardiomyopathy found in deficiency of and explain in detail?
(Selenium) (410-H) (449-H17th)Keshan disease - found in children and young women residing in regions of china where dietary intake of selenium is low (< 20 mg/d)* Concomitant deficiencies of iodine and selenium may worsen the clinical manifestations of cretinism.