20210207013000.0 http://sasjournal.com 1935-9810 scholarsportal Scholars Portal 2007/2011 2024-03-02 Preserved : 1 to 5 Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4) Preserved Elsevier SAS Journal 1935-9810 1935-9810 SAS journal 1935-9810 New York (State) 1935-9810 1935-9810 clockss CLOCKSS Archive 2007/2011 2024-03-25 1 to 5 1 to 5 Preserved International Society for the Advancement of Spine Surgery SAS Journal 1935-9810 http://www.sciencedirect.com/science/journal/19359810 SAS journal. 2007/2011 2024-03-25 1 to 5 1 to 5 Preserved Elsevier SAS Journal 1935-9810 SAS journal edepot National Library of the Netherlands 2007/2011 2023-10-20 Preserved : 1-5 Preserved : 1 (1-4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4) Preserved Elsevier SAS journal 1935-9810 portico Portico 2007/2011 2024-03-26 Preserved : 2007: 1, 2008: 2, 2009: 3, 2010: 4, 2011: 5 Preserved : 2007: 1(1-4), 2008: 2(1-4), 2009: 3(1-4), 2010: 4(1-4), 2011: 5(1-4) Preserved Elsevier SAS Journal 1935-9810 SAS journal.