After completion of his PhD thesis in 2001, he was a research fellow at the Framingham Heart Study in 2002-2003. He currently leads a research group with a handful of PhD and MD students, and is a course leader for methodological courses compulsory for all PhD students of Uppsala University Medical Faculty, as well as co-course leader for an epidemiology course for PhD students. In addition to his engagement in EpiHealth, he is the coordinator of the cardiovascular research group in BBMRI.SE and national coordinator for a large clinical trial in hypertension, APOLLO. In addition to his research activities, he works half-time as a physician. Initiator of the Epihealth project Metahealth, a research infrastructure for individual participant data meta-analysis of cohort studies, aimed at studying risk factors for uncommon diseases.