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. 2015 May 20;5:9864. doi: 10.1038/srep09864

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According to 14-day follow-up NIHSS score compared with baseline, the outcomes of neurological functions were classified as improved (NIHSS score decreased by ≥ 2 points), stabilized (NIHSS score unchanged or deceased by 1 point) and worsened (NIHSS score increased by ≥ 1 point).