Alterations of the raquis. Competitive observation learning program for the approach to physiotherapy in scoliosis - Felipe Querol Giner; Joaquín Calatayud; E Marqués; P Puigcerver Ferrando; José Casaña Granell (Edulearn21 Proceedings: 13th International Conference On Education And New Learning Technologies (July 5th-6th, 2021)