Norlander Staffan, Aste-Norlander Ulnka, Nordgren Bengt, and Sahlstedt Bo. “A Clinical Method for Measuring the Distribution of Segmental Flexion Mobility in the Cervico-Thoracic Spine”. Upsala Journal of Medical Sciences 100, no. 2 (January 18, 2010). Accessed May 13, 2024. https://ujms.net/index.php/ujms/article/view/6681.