1. Laboratory of Membrane Biochemistry and Biophysics; NIAAA, NIH; Bethesda Maryland 20892
2. Department of Chemistry and Biochemistry; University of North Carolina; Greensboro North Carolina 27402
3. Department of Biochemistry and Biophysics; University of Rochester Medical Center; Rochester New York 14642
4. Computational Biology Center, IBM Thomas J. Watson Research Center; Yorktown Heights New York 10598