TY - RPRT TI - Titanium or polymethylmethacrylate in cervical disc surgery? A prospective study. AU - B Jöllenbeck AU - N Fernandez AU - R Firsching PY - 2001 DO - 10.1055/s-2001-30714 UR - https://pubmed.ncbi.nlm.nih.gov/12023757/ ID - 12023757 ER -