Wonderlich SA, Crosby RD, Joiner T, Peterson CB, Bardone-Cone A, Klein M, Crow S, Mitchell JE, Le Grange D, Steiger H, Kolden G, Johnson F, Vrshek S. Personality subtyping and bulimia nervosa: psychopathological and genetic correlates. Psychol Med. 2005 May; 35(5):649-57.