From January 2002—European Institute of Oncology, Milan, Italy Division of Genetics and Cancer Prevention Senior Assistant Co-investigator in several national and international chemoprevention phase II and III clinical trials. Special interest in surrogate biomarkers and cancer risk. Co-principal investigator of a case-control study followed by a phase II study on vitamin D, microbiota, and colon cancer. 1998–2001—Mount Sinai Medical School, New York, NY Division of Clinical Immunology Postdoctoral fellow Responsible for an independent research project: T cells in the pathogenesis of common variable immunodeficiency. Training undergraduate students: a summer project to teach basic molecular biology protocols.