Automatic Grading of Disc Herniation, Central Canal Stenosis and Nerve Roots Compression in Lumbar Magnetic Resonance Image Diagnosis oleh Zhi-Hai Su, Jin Liu, Min-Sheng Yang, Zi-Yang Chen, Ke You, Jun Shen, Cheng-Jie Huang, Qing-Hao Zhao, En-Qing Liu, Lei Zhao, Qian-Jin Feng, Shu-Mao Pang, Shao-Lin Li, Hai Lu