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APA Citation
Wilke, J., Niederer, D., Vogt, L., & Banzer, W. (2018). reliability of measuring half-cycle cervical range of motion may be increased using a spirit level for calibration. Musculoskeletal science and practice, 33, 99–104. http://access.bl.uk/ark:/81055/vdc_100056545943.0x000001