Semi-quantitative grading and extended semi-quantitative grading for osteoporotic vertebral deformity: a radiographic image database for education and calibration - Wáng, Yì Xiáng J.; Diacinti, Daniele; Yu, Wei; Cheng, Xiao-Guang; Nogueira-Barbosa, Marcello H.; Che-Nordin, Nazmi; Guglielmi, Giuseppe; Ruiz Santiago, Fernando (Annals of Translational Medicine; Vol 8, No 6 (March 31, 2020): Annals of Translational Medicine, 2020)