"Vaccinations and the risk of childhood acute lymphoblastic leukemia." Society for Epidemiologic Research Student Workshop, Toronto, Canada (Jun 2001)
"Hepatoblastoma: association with low birth weight, and future directions." Seminar, Department of Epidemiology, Emory University, Atlanta, GA (Mar 2003)
"Childhood cancer: current knowledge." Invited speech, Women's Cancer Resource Center Turning the Tides III Conference, Minneapolis, MN (Oct 2003)
“Clusters, infections, and childhood cancers.” Symposium organizer and moderator, Second American Congress of Epidemiology, Seattle, WA (Jun 2006)
“Epidemiology of hepatoblastoma.” Pediatric Hematology/Oncology Fellow Conference, Children’s Hospital of Oakland (Nov 2006)
“Etiology of childhood cancer: past, present, and future,” Grand Rounds, Children’s Hospital of Oakland (Nov 2006)
“Osteosarcoma: cancer at the crossroads of life.” Lineberger Cancer Center & Epidemiology Seminar, University of North Carolina, Chapel Hill (Feb 2007)
“The use of newborn blood spots in environmental research: opportunities and challenges.” Invited participant, University of North Carolina, Chapel Hill (Feb 2007)
“Childhood cancer research at the University of Minnesota.” Northeast Minneapolis Kiwanis luncheon (Apr 2007)
“The curious case of infant leukemia.” Statens Serum Institut Colloquium, Copenhagen, Denmark (May 2007)
“Growth, genetics, and osteosarcoma.” Department of Epidemiology Research Seminar, Statens Serum Institut, Copenhagen, Denmark (May 2007)
“The epidemiology of childhood cancer.” Guest lecture, Epidemiology of Pediatric Diseases (EPID 518), University of Illinois at Chicago School of Public Health (Sep 2007)
“Genes, environment, and childhood cancer.” Invited speaker, Pediatric Oncology Group of Ontario Multi-disciplinary Symposium on Childhood Cancer, Toronto, Ontario (Nov 2007)
“Why do tiny babies get hepatoblastoma and what might it mean?” Department of Epidemiology Seminar, Emory University (Jan 2008)
“Why my kid? What we know about the causes of childhood cancer.” Minnesota Association of Pediatric Hematology Oncology Nurses, Brooklyn Park, MN (Feb 2008)
“Flavonoids and infant leukemia.” Invited speaker, Teratology Society Annual Meeting, Monterey, CA (Jun 2008)