Sorbonne Paris Cité Epidemiology and Biostatistics Research Center, French National Institute of Health and Medical Research U1153, French National Institute for Agricultural Research U1125, Cnam, Paris 13 University, Nutritional Epidemiology Research Team, Bobigny, France; Sorbonne Paris Cité Epidemiology and Biostatistics Research Center, French National Institute of Health and Medical Research U1153, French National Institute for Agricultural Research U1125, Cnam, Paris 13 University, Nutritional Epidemiology Research Team, Bobigny, France; Public Health Department, Avicenne Hospital, Bobigny, France; and. Sorbonne Paris Cité Epidemiology and Biostatistics Research Center, French National Institute of Health and Medical Research U1153, French National Institute for Agricultural Research U1125, Cnam, Paris 13 University, Nutritional Epidemiology Research Team, Bobigny, France; Dermatology Department, Saint André Hospital, Bordeaux, France. Sorbonne Paris Cité Epidemiology and Biostatistics Research Center, French National Institute of Health and Medical Research U1153, French National Institute for Agricultural Research U1125, Cnam, Paris 13 University, Nutritional Epidemiology Research Team, Bobigny, France; m.touvier@eren.smbh.univ-paris13.fr.