%0 Journal Article %T Comparison of the Efficacies of Ketamine and Fentanyl on Prevention of Early Post-Operative Pain After Tonsillectomy %A Öksüz, H. %A Şenoğlu, N. %A Doğan, Z. %J Journal of Clinical Practice and Research %D 2009 %V 31 %P 27-30 %R