@inbook{55905019,
author={Wing Hong Kwok and Manoj Karmakar},
editor={Hadzic, Admir},
title={Chapter 44. Spinal Sonography and Considerations for Ultrasound-Guided Central Neuraxial Blockade},
booktitle={Hadzic's Peripheral Nerve Blocks and Anatomy for Ultrasound-Guided Regional Anesthesia, 2e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2012},
url={accessanesthesiology.mhmedical.com/content.aspx?aid=55905019}
}