C. Triwikatmani, P. Bayupurnama, S. Maduseno, N. Ratnasari, F. Indrarti, and S. Nurdjanah, “Serum Zinc Level and Urinary Zinc Excretion in Liver Cirrhotic Patient”, InaJGHE, vol. 10, no. 1, pp. 2–6, Jan. 2009.