[1] LSU Hlth Shreveport, Dept Anesthesiol, 1501 Kings Highway, Shreveport, LA 71103 USA
[2] LSUHSC New Orleans, Dept Anesthesiol, 1542 Tulane Ave, New Orleans, LA 70112 USA
[3] LSUHSC New Orleans, Dept Anesthesiol, 1542 Tulane Ave,Room 659, New Orleans, LA 70112 USA
[4] LSU Hlth Shreveport, 1501 Kings Highway, Shreveport, LA 71103 USA
[5] LSUHSC New Orleans, Dept Anesthesiol, 433 Bolivar St, New Orleans, LA 70112 USA
[6] LSUHSC New Orleans, Dept Anesthesiol, 1452 Tulane Ave,Suite 659, New Orleans, LA 70112 USA
[7] LSU Hlth Shreveport, Dept Psychiat & Behav Med, Shreveport, LA USA
[8] LSU Hlth Shreveport, Dept Anesthesiol, 1501 Kings Highway, Shreveport, LA 71103 USA
[9] LSU Hlth Shreveport, Dept Oral Maxillofacial Surg, Craniofacial Surg Head Neck Surg, 1501 Kings Highway, Shreveport, LA 71103 USA
[10] Penn State Univ, Sch Med, Dept Anesthesiol, Milton S Hershey Med Ctr, 500 Univ Dr,H187, Hershey, PA 17033 USA
[11] Harvard Med Sch, Brigham & Womens Hosp, Dept Anesthesiol, Perioperat & Pain Med, 75 Francis St, Boston, MA 02115 USA