K. Hayashi, K. Yone, S. Matsunaga, T. Lzumi, H. Shimada and S. Komiya, “Neurological Complications in Cervical Laminoplasty-Open Door vs. French Door Laminoplasty,” Orthopedics & Traumatology, Vol. 53, No. 1, 2004, pp. 88-90. doi:10.5035/nishiseisai.53.88
 T. Chikawa, T. Nakagaawa, S. Endo, M. Nakamura, S. Nakano and T. Shimakawa, “Spinal Surgery in Elderly Patient More than Eighty Years Old-Complications and Surgical Results,” Journal of Spine Research, Vol. 3, 2012, pp. 812-818.
 H. Ohmiya, K. Okajima, Y. Abe, M. Tanoue, N. Mura-kami and S. Mori, “Anticoagulant during Perioperaive Stage of Spiral Surgery,” Orthopedics & Traumatology, Vol. 56, No. 2, 2007, pp. 214-216. doi:10.5035/nishiseisai.56.214