European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society|July 25, 2000
Revista Latinoamericana De Perinatologia : Organo Oficial De La Federacion Latinoamericana De Asociaciones De Medicina [Perinatal] (F.L.A.M.P.)|January 1, 1989
European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society|July 25, 2000
Revista Latinoamericana De Perinatologia : Organo Oficial De La Federacion Latinoamericana De Asociaciones De Medicina [Perinatal] (F.L.A.M.P.)|January 1, 1989