FOLLOW-UP At the 2 years follow-up, patients were contacted monthly by phone to determine whether any events had occurred at the first year and three months at the second year. Every three months, patients were examined face-to-face by two neurologists at the first year and every six months at the second year. The follow-up information included transient ischemic attack and ischemic stroke (in any vascular territory), brain hemorrhage, and all-cause death. If these events but death suspected, patients underwent brain computed tomography or MR imaging.