Johannes Siegrist is Professor Emeritus of Medical Sociology at the Centre for Health and Society, Heinrich-Heine-University Düsseldorf, Germany. He was Professor of Medical Sociology at the University of Marburg, Germany from 1973-1992 and at Heinrich-Heine-University Düsseldorf, Germany from 1992-2012, where he later became Senior Professor (2012-2021). He was also Visiting Professor at Johns Hopkins University School of Public Health, Baltimore USA in 1981, and at Utrecht University, The Netherlands in 1994. Professor Siegrist's main research is on social determinants of health with a focus on psychosocial work environments. He served as Chair/Member of international Task Groups, such as the WHO, ILO, and OECD, and past President of the International Society of Behavioural Medicine (ISBM) and the European Society of Health and Medical Sociology. His awards include Membership of Academia Europaea, Corresponding Membership of Heidelberg Academy of Sciences, and Lifetime Achievement Award of ISBM.Jian Li is Professor of Occupational Health in the Fielding School of Public Health and School of Nursing, UCLA, USA. His main research areas are in occupational epidemiology, psychosocial factors in the workplace, and work-related cardiovascular diseases and mental disorders. Professor Li's other positions include Co-Director of the Occupational Epidemiology Program at UCLA, in the U.S. National Institute for Occupational Safety and Health Southern California Education and Research Center (2021-present); Co-Chair of the Cardiovascular Disease Working Group, in the Cancer, Reproductive, Cardiovascular and Other Chronic Disease Prevention Cross-Sector Council, U.S. National Occupational Research Agenda (2022-present); and Vice-Chair of the Scientific Committee on Cardiology in Occupational Health, in the International Commission on Occupational Health (2022-present). He has received Early Career Awards from the ISBM (2006), the APA, NIOSH, SOHP jointly (2008), and STAR (2010).
