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Table 1: Patients’ baseline characteristics
No. Age/Sex Risk Factors Symptoms Target Lesions Contralateral VA Concurrent Anterior Circulation ≥50% Stenosis mRS
1 70/M HT, CAD, CS TIA (vertigo) R-V1 L-V1 Oc L-intraICA 50% 1
R-V4 
2 60/M HT, CS TIA (vertigo, diplopia, ataxia) R-V1, R-V4 L-V4 Oc R-ICA Oc 1
3 66/F HT Pontine infarct (vertigo, LOC) R-V1, BA L-V4 Oc L-M1 60% 0
4 79/M HT, CAD, CS TIA (vertigo) R-V1, BA L-V1 Oc R-ICA 55%, L-intraICA 60% 2
5 49/M HT, DL TIA (vertigo) L-V1, L-V4 R-V4 Oc No 0
6 60/M HT, CS TIA (vertigo) L-V1, BA R-V1 90% No 1
7 66/M HT TIA (vertigo) R-V1, R-V3, R-V4 L-V1 Oc R-intraICA 50% 2
8 74/M CS TIA (bilateral blindness) L-V1, L-V4 R-V1 Oc No 0
9 57/M HT, DL, DM, CS TIA (vertigo, L weakness) R-V1, BA L-V1 50% No 0
10 72/M HT, CS TIA (vertigo, R & L weakness) R-V1, R-V4 L-V4 Oc R-M1 50%, R-intraICA 60% 0
Note:—CAD indicates coronary artery disease; CS, cigarette smoking; DL, dyslipidemia; DM, diabetes mellitus; F, female; HT, hypertension; ICA, cervical internal carotid artery; intraICA, intracranial ICA; L, left; LOC, loss of consciousness; M, male; M1, first segment of middle cerebral artery; Oc, occlusion; R, right; V1, V3, V4, first, third, and fourth segments of the VA, respectively; TIA, transient ischemic attack; BA, basilar artery.