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Jahn, C; Brinkmann, C; Mössner, A; Wüstemeyer, H; Schnurrbusch, U; Wolf, S (2006). [Seasonal fluctuations and influence of nutrition on macular pigment density]. Ophthalmologe, 103(2), pp. 136-40. Heidelberg: Springer-Verlag 10.1007/s00347-005-1282-7
