Professional Experience Research Assistant, Transfusion Safety Study, USC School of Medicine, Los Angeles, CA. , 1986 – 1988 Statistical Consultant, Department of Preventive Medicine, USC School of Medicine, Los Angeles, CA. , 1988 – 1989 Biostatistician, CORE grant (Biometry Module), USC Department of Ophthalmology, Los Angeles, CA. , 1988 – 1990 Research Assistant, Department of Preventive Medicine, USC School of Medicine, Los Angeles, CA. , 1990 – 1991 Research Assistant, Department of Preventive Medicine, USC School of Medicine, Los Angeles, CA. , 1991 – 1992 Research Assistant Professor, Department of Preventive Medicine, USC School of Medicine, Los Angeles, CA. , 1992 – 1994 Research Associate Professor, Department of Preventive Medicine, USC School of Medicine, Los Angeles, CA. , 1994 – 1997