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Non-negative matrix factorisation methods for the spectral decomposition of MRS data from human brain tumours

Sandra Ortega-Martorell, Paulo JG Lisboa*, Alfredo Vellido, Margarida Julià-Sapé and Carles Arús*

BMC Bioinformatics 2012, 13:38  doi:10.1186/1471-2105-13-38