Evaluating the effectiveness of transcranial direct current stimulation on improving cognitive function in bipolar patients oleh Ali Talaei, Ali Akbari, Mahdiyeh Sarraf-Razavi, Shabnam Niroumand, Dina Ganji, Maryam Aghasizadeh, Ali Azadmand, Maryam Tayyebi-Meybodi, Sanam Tayyebi-Meybodi