Malo-Urriés , M, et al. , translators. “RELATIONSHIP BETWEEN BIPED, NORMAL SEATED AND CORRECTED SEATED POSITION WITH CERVICAL POSTURE IN SUBJECTS OVER 65 YEARS”. Cuestiones De Fisioterapia, vol. 46, no. 1, Feb. 2017, pp. 03-11, https://cuestionesdefisioterapia.com/index.php/es/article/view/197.