Muramatsu, Keiichi, et al. “Recalcitrant Posttraumatic Nonunion of the Humerus: 23 Patients Reconstructed With Vascularized Bone Graft: 23 Patients Reconstructed With Vascularized Bone Graft”. Acta Orthopaedica, vol. 74, no. 1, Jan. 2003, pp. 95-97, doi:10.1080/00016470310013734.