Answer to the Letter to the Editor of Qi Sun et al. concerning “Robot-assisted and conventional freehand pedicle screw placement: a systematic review and meta-analysis of randomized controlled trials” by Gao ST, et al. (Eur Spine J; 2017: DOI 10.1007/s00586-017-5333-y)

Gao, S., Lv, Z., & Fang, H. (2018, April 1). Answer to the Letter to the Editor of Qi Sun et al. concerning “Robot-assisted and conventional freehand pedicle screw placement: a systematic review and meta-analysis of randomized controlled trials” by Gao ST, et al. (Eur Spine J; 2017: DOI 10.1007/s00586-017-5333-y). European Spine Journal. Springer Verlag. https://doi.org/10.1007/s00586-018-5493-4