1. Department of Psychiatry; Abdurrahman Yurtaslan Ankara Onkoloji Training and Research Hospital; Ankara Turkey
2. Department of Neurology Medicine; Uludag University, Medical Faculty; Bursa Turkey
3. Department of Psychiatry; Ankara Numune Training and Research Hospital; Ankara Turkey
4. Department of Biostatistics; Uludag University, Medical Faculty; Bursa Turkey
5. Department of Psychiatry; Uludag University, Medical Faculty; Bursa Turkey