1 Department of the History of Science, Harvard University, Cambridge, MA, USA.
2 Department of Sociology, Harvard University, 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), Harvard Medical School, 4th Floor, Weight Center, 50 Staniford Street, Boston, MA 02114, USA.