title: Epidemiological puzzle pieces.
authors.forename: Isabel
authors.initials: I
authors.lastname: Hach
authors.forename: Uwe
authors.initials: U
authors.lastname: Ruhl
mesh_terms: D015897:Comorbidity; D006801:Humans; D009765:Obesity / Q000453:epidemiology* / Q000523:psychology; D011602:Psychophysiologic Disorders / Q000188:drug therapy / Q000453:epidemiology* / Q000523:psychology; D011611:Psychosomatic Medicine; D012307:Risk Factors; D012737:Sex Factors