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BMJ Open|November 28, 2014
Longitudinal follow-up of employment status in patients with chronic fatigue syndrome after mononucleosisMorten Nyland, Halvor Naess, Jon Steinar Birkeland, et al.
BMC Gastroenterology|February 10, 2012
Chronic fatigue syndrome after Giardia enteritis: clinical characteristics, disability and long-term sickness absenceHalvor Naess, Morten Nyland, Trygve Hausken, et al.
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