Seasonality in depressive and anxiety symptoms among primary care patients and in patients with depressive and anxiety disorders; results from the Netherlands Study of Depression and Anxiety

Research article

Wim H Winthorst^*, Wendy J Post, Ybe Meesters, Brenda WHJ Penninx and Willem A Nolen

BMC Psychiatry 2011, 11:198 doi:10.1186/1471-244X-11-198

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