Atorvastatin memodulasi ekspresi gen tumor necrosis factor interferon- dan interleukin-4 pada jaringan katup dan appendiks atrium kiri penderita penyakit jantung rematik = Atorvastatin modulating gene expression of tumor necrosis factor interferon- and interleukin-4 in cardiac valves and left atrial appendage of rheumatic heart disease