Depressive symptoms, life satisfaction and prevalence of sleep disturbances in the general population of Germany: results from the Heinz Nixdorf Recall study
Maria Elena Lacruz, Andrea Schmidt-Pokrzywniak, Nico Dragano, Susanne Moebus, Susanne Eva Deutrich, Stefan Möhlenkamp, Axel Schmermund, Hagen Kaelsch, Raimund Erbel, Andreas Stang
BMJ Open Jan 2016, 6 (1) e007919; DOI: 10.1136/bmjopen-2015-007919