Correction: Corrigendum: Low-dose add-on memantine treatment may improve cognitive performance and self-reported health conditions in opioid-dependent patients undergoing methadone-maintenance-therapy

Scientific Reports 5: Article number: 9708; published online: 19 May 2015; updated: 15 June 2017. In this Article, there are typographical errors in Table 2. The Continuous Performance Test (CPT) data for the MMT + P group was duplicated for the HC group. The correct Table 2 appears below as Table 1.