1. Taylor S (1988) A short history of the International Association of Endocrine Surgeons. World J Surg 12:429–430. doi: 10.1007/BF01655410
2. Family history obtained from interviews with Ast Ingela Katarina Heimann, MD; Dan Olaf Mikael Heimann, PhD, Vice Dean and Professor of Psychology, Linköping University; Hans Peter Curry Heimann, Head of the Museum of Haland; and Lars-Åke Goksör, husband of Ast Ingela Katarina Heimann, Genealogist and family archivist. Interview: August 26, 2012, Göteborg, Sweden
3. Bergen, Norway, history obtained from Jan Erik Varhaug, MD, PhD, Arne Skarstein, Professor Emeritus, and Michael Brauckoff, MD. Interview: August 25, 2012, Haukeland Hospital, University of Bergen, Bergen, Norway