Table 2. Neurological symptom scoring before and after combined DMSA and Zinc treatment (mean ± SD).

Time	GAS
Before DMSA	16.55 ± 3.19
1 year after DMSA	11.67 ± 3.27*
2 years after DMSA	10.87 ± 3.42*

^*P<0.01, compared with that before DMSA treatment.