Sedyati, P., and U. Sudharmono. “Effectiveness of Boiled Comfrey Leaf (Symphytum Officinale L) on Ureum Creatinine Serum in Male Wistar Strain of Acute Kidney Failure Model.”. Abstract Proceedings International Scholars Conference, vol. 7, no. 1, Dec. 2019, pp. 705-1, doi:10.35974/isc.v7i1.2075.