title: Challenges associated with a polythetic diagnostic system: criteria combinations in the personality disorders.
authors.affiliation: Department of Psychology, Texas A & M University, College Station, TX77842-4235, USA. lukedcooper@gmail.com
authors.forename: Luke D
authors.initials: LD
authors.lastname: Cooper
authors.forename: Steve
authors.initials: S
authors.lastname: Balsis
authors.forename: Mark
authors.initials: M
authors.lastname: Zimmerman