Influence of smoking status and cumulative smoking exposure on neurological recovery after surgery for degenerative cervical myelopathy: a prospective multicenter study.

Okubo T, Nagoshi N, Yamane J, Kono H, Kobayashi Y, Shibata R, Kitagawa T, Fujiyoshi K, Kitamura K, Iga T, Takeda K, Ozaki M, Suzuki S, Matsumoto M, Nakamura M, Watanabe K.