INTRA-EXAMINER RELIABILITY AND VALIDITY CRITERIA OF A SMARTPHONE APPLICATION TO MEASURE THE TEST FLEXION-ROTATION IN CERVICAL SPINE IN ASYMPTOMATIC SUBJECTS (M. Junquera-Tortosa, M. M. Sancho-García, M. Malo-Urriés, J. Rodríguez-Sanz, S. Cabanillas-Barea, & C. Hidalgo-García , Trans.). (2019). Cuestiones De Fisioterapia, 48(1), 04-10. https://cuestionesdefisioterapia.com/index.php/es/article/view/121