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Maria, N., van Helden-Meeuwsen, C., Brkic, Z., van Daele, P., van Hagen, M., Gibney, S., Harkin, A., Drexhage, H., & Versnel, M. (2014). aB0186 Elevated Indoleamine-2, 3-Dioxygenase (IDO) and Tryptophan Catabolism in Primary SjÖGren's Syndrome Patients, Positive for the Interferon Type I Signature: A Possible Link to Fatigue and Depression. Annals of the rheumatic diseases, 73, 864. http://access.bl.uk/ark:/81055/vdc_100135154581.0x000056