Godbole, I. A., and S. K. Elumalai. “Correlation of Non-Traumatic Neck Pain With Cervical Angle and Shoulder Retractor Power in Adult Clerical Population”. International Journal of Research in Medical Sciences, vol. 3, no. 4, Jan. 2017, pp. 859-62, https://www.msjonline.org/index.php/ijrms/article/view/1395.