Gultom, L., D. Sjarif, E. Ifran, P. Trihono, and J. Batubara. “Metabolic Syndrome and Visceral Fat Thickness in Obese Adolescents”. Paediatrica Indonesiana, Vol. 47, no. 3, July 2007, pp. 124-9, doi:10.14238/pi47.3.2007.124-9.