Setiati, S., S. Haricahyo, P. Rahardjo, L. Hakim, S. Supartondo, and T. B. Rahardjo. “The Effect of Ramadhan Fasting on Kidney Function Among Elderly Patients”. Medical Journal of Indonesia, Vol. 9, no. 1, Jan. 2000, pp. 23-8, doi:10.13181/mji.v9i1.649.