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APA Citation
Chell, K., Waller, D., & Masser, B. (n.d.). the Blood Donor Anxiety Scale: a six‐item state anxiety measure based on the Spielberger State‐Trait Anxiety Inventory. Transfusion, 56(6), 1645–1653. http://access.bl.uk/ark:/81055/vdc_100033038579.0x000063