1 Department of the History of Science, Harvard College, Cambridge, MA, USA.
2 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), 4th Floor, Weight Center, 50 Staniford Street, Boston, MA, 02114, USA. fstanford@mgh.harvard.edu.