Tobacco Research Programs Staff

Joni Jensen, MPH

Joni Jensen is the Tobacco Research Programs Clinic Manager. She is responsible for the administration of Dr. Dorothy Hatsukami and Dr. Stephen Hecht's research projects and is also responsible for regulatory oversight. She has worked in the tobacco research area for the past 25 years. Please contact her with any questions or concerns about the Tobacco Research Programs projects or staff.

Andrew Egbert

Andy is a Research Coordinator for the University of Minnesota’s Tobacco Research Program. He received a B.A in Psychology in 2013 from Gettysburg College. Prior to joining the Tobacco Research Program, Andy coordinated Screening, Brief Intervention, and Referral to Treatment (SBIRT) research, related to underage drinking in minority communities outside Washington DC.

Christine Dittel

Christine Dittel is a Research Coordinator for the University of Minnesota’s Tobacco Research Program. She started her research career at the U of M in 1991 after graduating from the University of Wisconsin- River Falls majoring in Psychology and Criminal Justice. She has worked on numerous preventative and early intervention initiatives for those at risk of addiction.

Joshua Ikuemonisan MD, MPH

Josh joined the Tobacco Research Programs in July 2018 after completing his masters training in Epidemiology with a focus on clinical trials and Biostatistics at the University of Minnesota. He also has training as a physician form the University of Ibadan School of Medicine.

Josh’s Main projects are:

1)  Clinical trial looking at oxidative damage and potential carcinogenesis in smoking and e-cigarette use.

2)  Phase I clinical trial evaluating the metabolism of carcinogens in smokeless tobacco using deuterated NNN.

His research goals are:

1)  Understanding the mechanisms of tobacco associated carcinogenesis.

2) Tobacco control and reduction in cancer incidence.

3)  Reducing disparity

Hanna Vanderloo, RN, MSN

Hanna Vanderloo is the Cancer Prevention and Control Program Manager. She is responsible for the oversight of several research projects including Dr. Irina Stepanov and Dr. Stephen Hecht’s. She has worked in clinical research for over 10 years and in tobacco research for the past 3 years. Please contact her with any questions.         

Amanda Anderson

Amanda Anderson is a Community Program Specialist for the University of Minnesota's Tobacco Research Programs. Amanda is a graduate of the University of Minnesota with a BA in Psychology and has been working in the field of nicotine and tobacco dependence since 1994. Amanda has coordinated numerous Smoking Cessation and Harm Reduction Trials and has spent over 10 years in the area of treating smokeless tobacco users.

Laura Dick

Laura Dick is a Clinical Research Coordinator and has been working with the Tobacco Research Programs through the Masonic Cancer Center since 2014. Laura received a B.S. in psychology with an emphasis in research from the University of Minnesota Twin Cities. She is currently pursuing her Master's degree in Public Health through the University of Minnesota's School of Public Health. Laura’s roles on the research team include participant and study coordination, processing of biosamples, data entry and analysis. Laura has received basic training for certification in phlebotomy, and provides phlebotomy services for studies within the Tobacco Research Program.

Katherine (Kat) Harrison, MPH

Kat Harrison has been working as a study coordinator for Tobacco Research Programs since 2010. Her work at the University of Minnesota has included research related to the use of exercise and relaxation as a smoking cessation tool. She completed her Masters of Public Health 2008. Before working with the University of Minnesota's Tobacco Research Programs, Kat worked as an epidemiologist in both Maine and the City of Baltimore.

Louise Hertsgaard, MA, TTS

Louise Hertsgaard received a M.A. in Developmental Psychology at University of Minnesota, 2007 and was certified as a Tobacco Treatment Specialist, Mayo Clinic Nicotine Dependence Center, 2008. Currently, she is a clinical research coordinator for the Tobacco Research Programs at the University of Minnesota. Since 2005 she has coordinated studies using oral tobacco and reduced nicotine content cigarettes to help people quit smoking.

Scott Ervin

Scott Ervin is the Executive Assistant to Dorothy Hatsukami, Director of Tobacco Research Programs. In addition to his many duties as Dr. Hatsukami's assistant, Scott coordinates meetings and seminars for the Tobacco Research Programs and the Prevention and Etiology Program.

Brogan McWilliams

Brogan McWilliams is a Research Coordinator for the University of Minnesota’s Tobacco Research Programs. Brogan received his BA in Biochemistry from Grinnell College in 2016. He worked in medicine, prior to joining the Tobacco Research Program in 2018. His ongoing study involves biomarker exposure and effect in E-cigarette users versus traditional tobacco users.

Jane Schulz, MPH, RN, CNP

Jane has been working as an adult nurse practitioner in tobacco and cocaine use research since 2008. She has responsibility for the entrance and exit physical exams for study participants where the studies require them. She also assists our medical directors in review of the participants' charts and provides some required skills training and updates for staff. She has a master's degree in public health and has spent most of her career working in public health both clinically, primarily in primary care with under-served and under-insured populations, as well as in other areas of research particularly HIV/AIDS, STIs, and tuberculosis.

Lori Strayer, MPH, MS

Lori is a Research Fellow, and has been supporting cancer research with faculty in Epidemiology and recently Tobacco Research since 2006. She received degrees and worked in engineering prior to pursuing a Masters Degree in Public Health in Epidemiology. Lori's roles on the research team is to assist with regulatory requirements and data management.

Mari Gades


Mari is a PhD candidate in Psychology's Cognitive and Brain Sciences program at the University of Minnesota. She earned her BA in Psychology from Colorado College. Mari joined the Tobacco Research Programs to write her dissertation, which focuses on the abuse potential of electronic cigarettes (e-cigs, vapes) and their potential regulation by the FDA. Her career goal is to teach undergraduate psychology and neuroscience courses, and to direct her own research lab to teach undergraduate students research methods and science communication.


Tobacco Research Programs
717 Delaware St SE
Minneapolis, MN 55414

Phone: 612-626-5155
Fax: 612-624-4610