%0 Journal Article %A Kayacan, Nurten %A Arıcı, Gülbin %A Karslı, Bilge %A Bigat, Zekiye %A Akar, Münire %T Patient-controlled epidural analgesia in labour: the addition of fentanyl or clonidine to bupivacaine %D 2004 %J Ağrı %P 59-66 %V 16 %N 3 %R %U https://dx.doi.org/