1. Resident.
2. Assistant Professor.
3. Assistant Professor, Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan.
4. Medical Student, Washington University School of Medicine.
5. Medical Student, University of Arizona School of Medicine, Tucson, Arizona.
6. Assistant Professor, Department of Mathematics and Division of Biostatistics, Washington University, St. Louis, Missouri.
7. Associate Professor, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri.