TY - JOUR AU - Critchley, L. A. PY - 2010 DA - 2010// JO - Anesth Analg VL - 111 UR - https://doi.org/10.1213/ANE.0b013e3181f08a5b DO - 10.1213/ANE.0b013e3181f08a5b ID - Critchley2010 ER -