@misc{indiciaed97ec61f76ec, title = {Cervical orthoses. A study comparing their effectiveness in restricting cervical motion in normal subjects.}, author = {R M Johnson and D L Hart and E F Simmons and G R Ramsby and W O Southwick}, year = {1977}, url = {https://pubmed.ncbi.nlm.nih.gov/849944/}, note = {Source identifier: 849944} }