1. Associate professor of pathology and medicine, Department of Pathology University of Missouri-Columbia, One Hospital Dr. Columbia, MO, US.
2. Assistant professor of pathology, University of Missouri-Columbia, and Boone County medical examiner, Columbia, MO, US.
3. Associate professor of medicine, University of Missouri-Columbia, and chief medical service, H. S. Truman Veterans Administration Hospital, Columbia, MO, US.