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Intraoperative changes of surgical approach and a second surgery after percutaneous endoscopic surgery for lumbar spinal stenosis LianSong Lu; ZhenShan Yuan; HaoJie Li; ShaoHua Sun;

Surgical complications in the first and second semesters of the general surgery medical residence. A study of 14063 cases Bruno Henrique Alvarenga; Izabel Cristina Rios; Francisco de Salles Collet e Silva; Edivaldo Massazo Utiyama;