Paravertebral Block In Inguınal Hernıa Operatıons Two Segments Or Four Segments ? - Özkan Derya; Akkaya Ömer Taylan; Balıkçı Nilgün; Cömert Ayhan; Özdemir Sevgi Esra; Ergül Zafer; Kaya İsmail Oskay (My University, 2009)