Bokelund M, Andreasen JO, Christensen SSA, Kjaer I. Autotransplantation of maxillary second premolars to mandibular recipient sites where the primary second molars were impacted, predisposes for complications. Acta Odontologica Scandinavica. 2013 nov.;71(6):1464-8. doi: 10.3109/00016357.2013.770918