1. Formerly chief, Chicago Medical School Service, Department of Medicine, and director, Renal Unit, Cook County Hospital (present address, Mount Sinai Hospital, Chicago, Illinois).
2. Senior pathologist, Department of Pathology, Hektoen Institute and Cook County Hospital.
3. Chief resident, Chicago Medical School Service, Department of Medicine, Cook County Hospital.
4. Head, Immunochemistry Laboratory, Hektoen Institute.
5. Director, Department of Biochemistry, Hektoen Institute and Cook County Hospital.