Groves D, Naik BI, Welsby IJ, Tanaka K, Hauck J, Greenberg C, Finley A, Winegar D, Viola F. Comparison of the Quantra system to a series of lab-based clinical composite indexes: a multi-center investigation. American Society of Anesthesiologists (ASA), San Francisco, CA, USA. October 13-17, 2018.