1 University Medical Center Hamburg-Eppendorf, Department of Endocrinology and Diabetes, Hamburg, Germany. p.roser@uke.de.
2 Harvard University, Department of the History of Science, Cambridge, MA, USA.
3 Massachusetts General Hospital, MGH Weight Center, Department of Medicine-Division of Endocrinology-Neuroendocrine, Department of Pediatrics-Division of Endocrinology, Nutrition Obesity Research Center at Harvard (NORCH), Boston, MA, USA.