Zamani, S., F. Okhovatian, and S. S. Naimi. “Narrative Review: Effects of Manipulation and Mobilization Techniques of Cervical Spine on Pressure Pain Threshold in Neck and Shoulder Muscles”. Journal of Clinical Physiotherapy Research, vol. 1, no. 1, July 2016, pp. 1-5, doi:10.22037/jcpr.v1i1.10385.