@article{4e52e7593cfe4ab68ce45ff121622080,
title = "Intravenous but not perineural clonidine prolongs postoperative analgesia after psoas compartment block with 0.5\% levobupivacaine for hip fracture surgery",
author = "Stephen Mannion and I. Hayes and F. Loughnane and D.B. Murphy and George Shorten",
year = "2005",
language = "English (Ireland)",
volume = "100",
pages = "873--878",
journal = "Anesthesia and Analgesia",
issn = "0003-2999",
publisher = "Lippincott Williams and Wilkins",
number = "33",
}