1 College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, USA.
2 Department of Anesthesiology, University of Oklahoma Health Sciences Center, 920 Stanton L. Young Blvd, Oklahoma City, OK, WP114073104, USA.
3 Department of Anesthesiology, University of Oklahoma Health Sciences Center, 920 Stanton L. Young Blvd, Oklahoma City, OK, WP114073104, USA. Aimee-Pak@ouhsc.edu.