Widjajanto, P. H., R. T. Sugiarto, S. Sutaryo, and K. Ali. “Circumcision in Boys With Mild Hemophilia A – the Yogyakarta Experience”. Paediatrica Indonesiana, vol. 47, no. 2, May 2007, pp. 71-3, doi:10.14238/pi47.2.2007.71-3.