Answer to the Letter to the Editor of He Maolin et al. concerning "Comparison of unilateral versus bilateral percutaneous kyphoplasty for the treatment of patients with osteoporosis vertebral compression fracture (OVCF): a systematic review and meta-analysis" by Cheng X, Long HQ, Xu JH, et al. Eur Spine J (2016) 25: 3439. doi:10.1007/s00586-016-4395-6
Eur Spine J. 2017 Apr;26(4):1322-1323.
doi: 10.1007/s00586-017-4965-2.
Epub 2017 Feb 6.
1 Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
2 Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, People's Republic of China. houqinglong@163.com.