Harms-Ringdahl K, Ekholm J. Intensity and character of pain and muscular activity levels elicited by maintained extreme flexion position of the lower-cervical-upper-thoracic spine. JRM [Internet]. 2020 Aug. 6 [cited 2024 Jul. 26];18(3):117-26. Available from: https://medicaljournalssweden.se/jrm/article/view/4061