Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA. Baruch Ivcher School of Psychology, Interdisciplinary Center, Herzliya, Israel. Department of Psychiatry, UNC Center of Excellence for Eating Disorders, The University of North Carolina School of Medicine, Chapel Hill, NC. Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.