Żukowska H, Szark-Eckardt M, Muszkieta R, Iermakova T. CHARACTERISTICS OF BODY POSTURE IN THE SAGITTAL PLANE AND FITNESS OF FIRST-FORM PUPILS FROM RURAL AREAS. Pedagogics, psychology, medical-biological problems of physical training and sports. 2014;18(7):50-6. https://doi.org/10.6084/m9.figshare.1015583