 - NOTE: Criteria 1 and 2 above meant that participants who enrolled in CAMMS323 or CAMMS324 but did not complete the 2-year study period or went on to receive non-study drug DMTs after randomization were not eligible for inclusion in the Extension Study. Participants who enrolled in CAMMS324 after participation in CAMMS223 must meet criteria 1 or 2 to be eligible for inclusion in the Extension Study. 