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APA Citation
Eisenhofer, G., Brown, S., Peitzsch, M., Pelzel, D., Lattke, P., Glöckner, S., Stell, A., Prejbisz, A., Fassnacht, M., Beuschlein, F., Januszewicz, A., Siegert, G., & Reichmann, H. (n.d.). levodopa therapy in Parkinson's disease: influence on liquid chromatographic tandem mass spectrometric-based measurements of plasma and urinary normetanephrine, metanephrine and methoxytyramine. Annals of clinical biochemistry, 51, 38–46. http://access.bl.uk/ark:/81055/vdc_100057101509.0x000012