Portions of this work were presented in abstract form at the following meetings: 13th Annual Scientific Conference of the Canadian Spine Society held in Mont Tremblant, Quebec, Canada, on February 27–March 2, 2013; 11th Annual AOSpine North America Fellows Forum held in Banff, Alberta, Canada, on March 14–16, 2013; 4th International Chordoma Research Workshop held in Boston, Massachusetts, on March 21–22, 2013; Global Spine Congress 2013 held in Hong Kong, People's Republic of China, on April 4–6, 2013; 3rd Charité Spine Tumor Days held in Berlin, Germany, on May 31–June 1, 2013; 20th International Meeting on Advanced Spine Techniques held in Vancouver, British Columbia, Canada, on July 10–13, 2013; Scoliosis Research Society 48th Annual Meeting & Course held in Lyon, France, on September 18–21, 2013; EuroSpine 2013 held in Liverpool, United Kingdom, on October 2–4, 2013; and North American Spine Society (NASS) 28th Annual Meeting held in New Orleans, Louisiana, on October 9–12, 2013.
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