Peran hidroksiklorokuin terhadap disfungsi endotel pasien artritis reumatoid: kajian peran homa-ir, oxldl dan free fatty acid beserta korelasinya terhadap disfungsi endotel = Role of hydroxychloroquine on endothelial dysfunction in rheumatoid arthritis patients study of homa ir oxldl and free fatty acid roles and the correlation with endothelial dysfunction