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APA Citation
Martinsen, U., Bentzen, H., Holter, M. K., Nilsen, T., Skullerud, H., Mowinckel, P., & Kjeken, I. (n.d.). the effect of occupational therapy in patients with chronic obstructive pulmonary disease: A randomized controlled trial. Scandinavian journal of occupational therapy, 24, 89–97. http://access.bl.uk/ark:/81055/vdc_100042032437.0x000045