Correction: Answer to the Letter to the Editor of J. Tu, et al. concerning "Patient reported outcome measures and satisfaction after laminectomy for degenerative cervical myelopathy in octogenarians: an observational study from the National Swedish spine registry" by V. G. El-Hajj, et al. (Eur spine J [2025]; doi:10.1007/s00586-025-08890-1)