 Timothy Lash is a professor and chair of the Department of Epidemiology at Rowling School of Public Health. He is also the Associate Director of Population Sciences at the Winship Cancer Institute at Emory University and he is the Editor-in-Chief of the prestigious journal Epidemiology. Lash's research focuses on molecular biomarkers that predict cancer recurrence. Together with his team he has developed large biobanks of tumour tissues from cancer patients which he has connected to clinical outcomes. Timothy Lash is also interested in disparities in the quality of cancer care, especially those related to age. I think the most significant impact of our research program has been in identifying predictors of breast cancer recurrence. Our work is focused on two types of studies. The first type uses surgically removed breast tissues as a source of information about biologic markers in relation to breast cancer recurrence. We collected close to 7,000 blocks and used laboratory assays to measure various characteristics. We then linked the information to treatment and recurrence information routinely collected for breast cancer patients by the Danish breast cancer group. The second type of study evaluates whether use of routine prescription medications might prevent breast cancer recurrence. For example, we found that women taking statins to treat high cholesterol seem to have a lower risk of breast cancer recurrence. This finding contributed to the Danish breast cancer group's decision to launch a clinical trial that will rigorously evaluate whether use of statins reduces the risk of recurrence. My research relationship to Orhus University started more than 20 years ago with a visit to the Department of Clinical Epidemiology, led by Henrik Toff Sorensen. They have done outstanding work in clinical epidemiology with collaborators from across the world, so I feel fortunate to have been one of the earlier collaborators. I visited the department many times, taught courses at the university, had many research projects funded by both Danish and US sources, and even lived in Orhus for two years while working in the department. I take special satisfaction about the more than 20 doctoral students who I have worked with in collaboration with Orhus University. My connections to the university have been among the most enjoyable and important aspects of my academic career. Professor Lash has collaborated with Orhus University for almost 20 years, and he has made huge and invaluable contributions to developing new research ideas at the Department of Clinical Epidemiology. Professor Lash has supervised several PhD students at Orhus University, and he has been a driving force in arranging stays for our students at American universities. We highly appreciate this collaboration. Professor Lash was introduced to me by Professor Ken Rodman from Boston University around 20 years ago. Since then, Tim Lash has collaborated with a scientist at Orhus University. He has published more than 100 papers with our colleagues, and he has made a major contribution within bias analysis and cancer prognostic research.