title: The importance of the main effect even within an interaction model: elimination vs. expansion of the bereavement exclusion in the diagnostic criteria for depression.
authors.forename: Jerome C
authors.initials: JC
authors.lastname: Wakefield
authors.forename: Mark F
authors.initials: MF
authors.lastname: Schmitz
authors.forename: Michael B
authors.initials: MB
authors.lastname: First
authors.forename: Allan V
authors.initials: AV
authors.lastname: Horwitz