Passias PG, Pierce KE, Kummer N, Krol O, Passfall L, Janjua MB, Sciubba D, Ahmad W, Naessig S, Diebo B
Pierce KE, Passias PG, Brown AE, Bortz CA, Alas H, Passfall L, Krol O, Kummer N, Lafage R, Chou D, Burton DC, Line B, Klineberg E, Hart R, Gum J, Daniels A, Hamilton K, Bess S, Protopsaltis T, Shaffrey C, Schwab FA, Smith JS, Lafage V, Ames C, on behalf of the International Spine Study Group (ISSG)