title: Understanding comorbidity: from epidemiological designs and model-fitting approaches to systems biology as a new tool.
authors.forename: J K
authors.initials: JK
authors.lastname: Buitelaar
mesh_terms: D015897:Comorbidity; D006801:Humans; D001523:Mental Disorders / Q000150:complications / Q000453:epidemiology / Q000523:psychology; D008960:Models, Psychological; D049490:Systems Biology