A.50%~55% B.60%~65% C.70%~75% D.80%~85% E.90%~95%
A.腰痛 B.坐骨神經(jīng)痛 C.股神經(jīng)痛 D.下肢無力 E.大、小便障礙
A.20~29歲 B.30~39歲 C.40~49歲 D.50~59歲 E.60歲以上