Abdurahman, N., Alwi, I., Hakim, L., Ismail, D. and Soelistijo, H. 1998. Association of disease activity and pericardial effusion on systemic lupus erythematosus patients. Medical Journal of Indonesia. 7, 2 (Apr. 1998), 89-93. DOI:https://doi.org/10.13181/mji.v7i2.782.