Comparison of outcomes and recurrence rates in patients undergoing single or double burr hole surgery for the treatment of chronic subdural hematoma in Bosnia and Herzegovina oleh Ibrahim Omerhodžić, Bekir Rovčanin, Ismar Ećo, Bakir Kudić, Salko Zahirović, Almir Džurlić, Adi Ahmetspahić, Mirza Pojskić