title: Incremental progress in developmental psychopathology: simply complex.
authors.forename: J F
authors.initials: JF
authors.lastname: Leckman
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D017668:Age of Onset; D002648:Child; D004198:Disease Susceptibility; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology / Q000209:etiology* / Q000523:psychology*; D010554:Personality Disorders / Q000453:epidemiology / Q000209:etiology / Q000523:psychology; D012307:Risk Factors