Factor XII Deficiency Acquired by Orthotopic Liver Transplantation: Case Report and Review of the Literature. Osborn N., Ustundag Y., Zent C., Wiesner R., Rosen C., K. Menon N. Factor XII Deficiency Acquired by Orthotopic Liver Transplantation: Case Report and Review of the Literature. //Am J Transplant. 2006;6(7):1743-1745. Read more about Factor XII Deficiency Acquired by Orthotopic Liver Transplantation: Case Report and Review of the Literature. Google Scholar BibTex RTF Tagged MARC XML RIS