Nicolas Barnett is a critical care physician based at the Royal Free Hospital in London. He has over 20 years of experience working in the National Health Service. He has a longstanding interest in the medical humanities. Nicholas Chare teaches cultural and critical theory in the Department of History of Art, Film and Audiovisual Studies at the Université de Montréal. He is the co-author (with Dominic Williams) of Matters of Testimony (2016) and The Auschwitz Sonderkommando (2019) and the co-editor (with Valérie Bienvenue) of Animals, Plants and Afterimages (2022). Dominic Williams is an Assistant Professor of History at Northumbria University. He is the co-author (with Nicholas Chare) of Matters of Testimony (2016) and The Auschwitz Sonderkommando (2019) and the co-editor (with Sarah Cushman and Joanne Pettitt) of The Routledge Handbook to Auschwitz-Birkenau (2025).