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Straube, Andreas; Aicher, Bernhard; Foerderreuther, Steffanie; Eggert, Thomas; Koeppel, Janin; Moeller, Stefan; Schneider, Roland; Haag, Gunther (2013): Period prevalence of self-reported headache in the general population in Germany from 1995-2005 and 2009: results from annual nationwide population-based cross-sectional surveys. In: The Journal of Headache and Pain, Vol. 14, 11 [PDF, 702kB]