Xu, X Leon, et al. “Immune Response and Effect of Adenovirus-Mediated Human BMP-2 Gene Transfer on the Repair of Segmental Tibial Bone Defects in Goats”. Acta Orthopaedica, vol. 76, no. 5, Jan. 2005, pp. 637-46, doi:10.1080/17453670510041709.